更多“单选题The major cause of malnutrition in the world is lack of ______.A proteinB vitaminC mineralsD food”相关问题
  • 第1题:

    What can cause a lack of oxygen in a chain locker ________.

    A.Absorption

    B.Osmosis

    C.Evaporation

    D.Oxidation


    正确答案:D

  • 第2题:

    共用题干
    Malnutrition
    "Much of the sickness and death attributed to the major communicable diseases is in fact caused by malnutrition which makes the body less able to withstand infections when they strike",said Dr.Hiroshi Na-kajima,Director-General of the World Health Organization(WHO),in his statement on the first day of the
    World Food Summit organized by the Food and Agriculture Organization of the United Nations in Rome,Italy,from 1 3 to 17 November,1996.
    "At the same time,"he added,"in developing countries today,malnutrition is the cause of 174 million children under five years of age being underweight,and 230 million being stunted in their growth.Such figures represent deprivation, suffering and wasted human potential on a scale that is unacceptable from every point of view.Whether we think in terms of humanitarian concern,common justice or development needs, they demand a response,both from national governments and from international community."
    At the end of January 1996,98 countries had national plans of action for nutrition and 41 countries had one under preparation,in keeping with their commitments made at the International Conference on Nutrition in Rome in December 1992.The global situation,however,remains grim.Over 800 million people around the world still cannot meet basic needs for energy and protein,more than 2 ,000 million people lack essential micronutrients,and hundreds of millions suffer from diseases caused by unsafe food and unbalanced diets.
    In sheer numbers,iron is the most prevalent micronutrient deficiency.Mainly women of reproduction' age and children under five are affected by iron deficiency with prevalence hovering around 50% in developing countries.Among various regions in the world,it is South Asia which is hit hardest with prevalence reaching 80% in some countries.Tn infants and young children even mild anemia is associated with impaired intellectual as well as physical development.In older children and adults iron deficiency reduces work capacity and output.
    It also leads to increased accidents at work.
    While there is no single remedy,a combination of several preventive approaches is believed to work best.Dietary improvement includes consumption of iron-and vitamin C-rich foods and foods of animal origin, and avoiding drinking tea or coffee with or soon after meals.Iron supplementation of foods,particularly of staple cereals,is practiced in a growing number of countries.Iron supplementation is the most common approach,particularly for pregnant women.

    How many countries have made plans of action for nutrition?
    A:98.
    B:41.
    C:139.
    D:57.

    答案:A
    解析:
    根据第一段第一句,直接的因果关系发生在sickness and death和malnutrition之间。
    答案依据在文章第二段,其中讲到“Such figures represent deprivation , suffering and wasted human potential on a scale that is unacceptable… they demand a response …",由此得知,不管出于哪个方面的考虑,我们都要采取行动。
    文章第三段中提到“98 countries had national plans of action for nutrition",而另有41个国家的计划只是在准备中,并未被真正制定出来。
    文章第四段中提到缺铁会引发贫血(anemia)、智力和身体发育受阻碍(impaired intellec-tual as well as physical development)、工作能力下降(reduces work capacity )。 C项traffic acci-dents在文中并未提及,故选C。
    与该题有关的原文是在最后一段中,第二句话中提到" avoiding drinking tea or coffee with or soon after meals",这与C项描述相反,而其他三项在文中均被提及,故选C。

  • 第3题:

    共用题干
    第三篇

    Malnutrition

    "Much of the sickness and death attributed to the major communicable diseases is in fact caused by
    malnutrition which makes the body less able to withstand infections when they strike",said Dr. Hiroshi Na-
    kajima,Director-General of the World Health Organization(WHO),in his statement on the first day of the
    World Food Summit organized by the Food and Agriculture Organization of the United Nations in Rome,Ita-
    ly,from 13 to 17 November,1996.
    "At the same time,"he added," in developing countries today,malnutrition is the cause of 174 million
    children under five years of age being underweight,and 230 million being stunted in their growth.Such figures
    represent deprivation,suffering and wasted human potential on a scale that is unacceptable from every point
    of view.Whether we think in terms of humanitarian concern,common justice or development needs,they
    demand a response,both from national governments and from international community.
    At the end of January 1996,98 countries had national plans of action for nutrition and 41 countries had
    one under preparation,in keeping with their commitments made at the International Conference on Nutrition
    in Rome in December 1992. The global situation, however, remains grim.
    Over 800 million people around
    the world still cannot meet basic needs for energy and protein, more than two thousand million people lack
    essential micronutrients,and hundreds of millions suffer from diseases caused by unsafe food and unbalanced
    diets.
    In sheer numbers,iron is the most prevalent mieronutrient deficiency. MainlY women of reproduction age
    and children under five are affected by iron deficiency with prevalence hovering around 50% in developing
    countries.
    Among various regions in the world, it is South Asia which is hit hardest with prevalence reaching
    80% in some countries.In infants and young children even mild anemia is associated with impaired intellectual
    as well as physical development.In older children and adults iron deficiency reduces work capacity and output.
    It also leads to increased accidents at work.
    While there is no single remedy,a combination of several preventive approaches is believed to work
    best一Dietary improvement includes consumption of iron一and vitamin C-rich foods and foods of animal origin,
    and avoiding drinking tea or coffee with or soon after meals.Iron supplementation of foods,pathcularly of
    staple cereals,is practiced in a growing number of countries.Iron supplementation is the most common
    approach,particularly for pregnant women.

    Which of the following is NOT mentioned as a remedy for iron deficiency?
    A:Eating iron-rich foods.
    B:Avoiding drinking tea with meals.
    C:Drinking coffee soon after meals.
    D:Eating foods of animal origin.

    答案:C
    解析:
    根据第一段第一句,直接的因果关系发生在sickness和malnlltrition之间。
    答案依据在文章第二段,其中讲到“Such figures represent deprivation,suffering and wasted human potential on a scale that 10 unacceptable…they demand a response,…”由此得知,在情形严重时要采取行动。
    文章第三段中提到98countries had national plan,of action for nutritioll,而另有41个国家的计划只是在准备中,并未制定出计划来。
    文章第四段中提到缺铁会引发贫血(anemia)、智力和身体发展受损(impaired intelleetual as well as physical development)、工作能力下降(reduces work capacity)。C项traffic accidents 与题意不符,故选C。
    与B项和C项有关的原文是在最后一段的第二句话中“avoiding drinking tea or coffeewith or soon after meals",故选C。第5部分;补全短文

  • 第4题:

    共用题干
    第三篇

    Malnutrition

    "Much of the sickness and death attributed to the major communicable diseases is in fact caused by
    malnutrition which makes the body less able to withstand infections when they strike",said Dr. Hiroshi Na-
    kajima,Director-General of the World Health Organization(WHO),in his statement on the first day of the
    World Food Summit organized by the Food and Agriculture Organization of the United Nations in Rome,Ita-
    ly,from 13 to 17 November,1996.
    "At the same time,"he added," in developing countries today,malnutrition is the cause of 174 million
    children under five years of age being underweight,and 230 million being stunted in their growth.Such figures
    represent deprivation,suffering and wasted human potential on a scale that is unacceptable from every point
    of view.Whether we think in terms of humanitarian concern,common justice or development needs,they
    demand a response,both from national governments and from international community.
    At the end of January 1996,98 countries had national plans of action for nutrition and 41 countries had
    one under preparation,in keeping with their commitments made at the International Conference on Nutrition
    in Rome in December 1992. The global situation, however, remains grim.
    Over 800 million people around
    the world still cannot meet basic needs for energy and protein, more than two thousand million people lack
    essential micronutrients,and hundreds of millions suffer from diseases caused by unsafe food and unbalanced
    diets.
    In sheer numbers,iron is the most prevalent mieronutrient deficiency. MainlY women of reproduction age
    and children under five are affected by iron deficiency with prevalence hovering around 50% in developing
    countries.
    Among various regions in the world, it is South Asia which is hit hardest with prevalence reaching
    80% in some countries.In infants and young children even mild anemia is associated with impaired intellectual
    as well as physical development.In older children and adults iron deficiency reduces work capacity and output.
    It also leads to increased accidents at work.
    While there is no single remedy,a combination of several preventive approaches is believed to work
    best一Dietary improvement includes consumption of iron一and vitamin C-rich foods and foods of animal origin,
    and avoiding drinking tea or coffee with or soon after meals.Iron supplementation of foods,pathcularly of
    staple cereals,is practiced in a growing number of countries.Iron supplementation is the most common
    approach,particularly for pregnant women.

    What is the cause of much of the sickness and death?
    A:Certain diseases.
    B:Malnutrition.
    C:Infections.
    D:Accidents.

    答案:B
    解析:
    根据第一段第一句,直接的因果关系发生在sickness和malnlltrition之间。
    答案依据在文章第二段,其中讲到“Such figures represent deprivation,suffering and wasted human potential on a scale that 10 unacceptable…they demand a response,…”由此得知,在情形严重时要采取行动。
    文章第三段中提到98countries had national plan,of action for nutritioll,而另有41个国家的计划只是在准备中,并未制定出计划来。
    文章第四段中提到缺铁会引发贫血(anemia)、智力和身体发展受损(impaired intelleetual as well as physical development)、工作能力下降(reduces work capacity)。C项traffic accidents 与题意不符,故选C。
    与B项和C项有关的原文是在最后一段的第二句话中“avoiding drinking tea or coffeewith or soon after meals",故选C。第5部分;补全短文

  • 第5题:

    共用题干
    Food Safety and Foodborne illness

    Food safety is an increasingly important public health issue.Governments all over the world are
    intensifying their efforts to_______(51)food safety.These efforts are in response to an increasing number
    of food safety problems and__________(52)consumer concerns.
    Foodborne illnesses are defined as diseases , usually either infectious or toxic(有毒的)in nature,caused
    by agents that__________(53)the body through the ingestion(摄取)of food. Every person is__________(54)
    risk of foodborne illnesses.
    Foodborne diseases are a widespread and growing public health__________(55),both in developed and
    developing countries.The global incidence of foodborne diseases is difficult to___________(56),but it has
    been reported that in 2005 alone 8 million people died from diarrhoeal(腹泻)diseases. A great proportion of
    these _________ ( 57 ) can be attributed to contamination(污染)of food and drinking water. Additionally,
    diarrhoea is a _________( 58 ) cause of malnutrition(营养不良)in infants and young children.
    In industrialized countries,the percentage of the population suffering from foodborne diseases each year
    has been__________(59)to be 10 up to 30%.In the United States of America,for example,around 76 million
    cases of foodborne diseases,resulting_(60)325,000 hospitalizations and 5,000 deaths,are
    estimated to occur each year.
    _________( 61 ) less well documented , developing countries bear the brunt(首当其冲)of the problem
    due to the presence of a wide_________(62)of foodborne diseases,including those caused by parasites
    (寄生虫).The high prevalence of diarrhoeal diseases in many developing countries suggests major
    ________(63)food safety problems.
    In partnership with other stakeholders,WHO is developing___________(64)that will further promote the
    safety of food.These policies___________(65)the entire food chain from production to consumption and will
    make use of different types of expertise(专长).

    _________(57)
    A:factors
    B:products
    C:cases
    D:countries

    答案:C
    解析:
    此处表示的是:提高食物的安全性,用improve。
    由于频繁出现的质量问题和消费者不断提高的安全意识,政府采取了相应的措施。
    此处指通过摄取食物进人人体。
    at risk of sth.是固定搭配,意为“有危险,冒风险。”
    health problem意为“健康问题”,在此符合语境。interest兴趣;service服务;benefit 利益。
    此处表示“因为食物引起的疾病数量很难测定”,故选B。 compare比较;explain解释; reduce减少。
    由前面提到的腹泻疾病可知此处指病例,故选C。
    此处表示:腹泻是造成婴儿和小孩营养不良的主要原因。故选B。
    此处应该指被“报道”,而不是想象,承认或认为。
    result in sth.是固定搭配,意为“造成,导致”。
    as在此处意为“尽管”,符合语境。
    a wide range of为固定搭配,意为“各种的”,在此符合语境。
    腹泻的流行意味着食品安全问题的扩张。故选B。 prevailing流行的;troubling有麻烦 的;underlying在下面的。
    由65空前的these policies可知答案。
    cover指覆盖,在此符合语境。

  • 第6题:

    What was the main cause of the Second World War?()

    AThe main cause was big power struggle for control of the world.

    BIt was the worldwide economic crisis.

    CIt was the military expansion of Japan,and Germany.


    A

  • 第7题:

    The doctor said that mental () is the major cause of his sleeping problem.

    • A、tension
    • B、sadness
    • C、anger
    • D、relaxation

    正确答案:A

  • 第8题:

    单选题
    The major cause of fuel pump and injection system problems is ()
    A

    improper adjustments

    B

    contaminated fuel

    C

    kinked fuel lines

    D

    excessive engine vibration


    正确答案: C
    解析: 暂无解析

  • 第9题:

    单选题
    According to the article, what is the cause of general on-the-job discomfort?
    A

    A lack of movement

    B

    Poor monitor positioning

    C

    A busy schedule

    D

    Working overtime


    正确答案: B
    解析:
    最后1段第1句we spend most of our day sitting down指出办公室职员们成天坐着工作,故选A。

  • 第10题:

    单选题
    The major cause of anchor buoy pendant wire failures is().
    A

    corrosion

    B

    rough weather

    C

    defective sockets

    D

    mishandling


    正确答案: D
    解析: 暂无解析

  • 第11题:

    单选题
    What can cause a lack of oxygen in a chain locker().
    A

    Absorption

    B

    Osmosis

    C

    Evaporation

    D

    Oxidation


    正确答案: A
    解析: 暂无解析

  • 第12题:

    单选题
    What was the main cause of the Second World War?()
    A

    The main cause was big power struggle for control of the world.

    B

    It was the worldwide economic crisis.

    C

    It was the military expansion of Japan,and Germany.


    正确答案: A
    解析: 暂无解析

  • 第13题:

    共用题干
    "Much of the sickness and death attributed_________(51)the major communicable diseases is in fact caused by malnutrition which makes the body less able to withstand infections when they strike",said Dr. Hiroshi Nakajima,Director-General of WHO,in his statement on the first day of the World Food Summit.

    "At the same time,"he added,"in developing countries today,malnutrition is the cause of 174 million children under five years of age being________(52),and 230 million being stunted in their growth.Such_________(53)represent deprivation,suffering and wasted human potential __________(54)a scale that is unacceptable from every point of view. Whether we think in __________(55)of humanitarian concern,common justice or development needs,they demand a ___________(56),both from national governments and from international community."At the end of January 1996,98__________(57)had national plans of action for nutrition and 41 countries had one under preparation,in keeping with their___________(58)made at the International Conference on Nutrition in Rome in December 1992.

    The global situation,__________(59),remains grim. It is now __________(60)that 6.6 million out of the estimated 12.2 million deaths_________(61)are among children under five.In some__________(62),such as sub-Saharan Africa and south Asia,stagnation (停滞)of nutritional improvement_________(63)with a rapid rise in population has result in an ________(64)increase in total number of malnourished children.Over 800 million people around the world still cannot_________(65)basic needs for energy and protein,more than two thousand million people lack essential micronutrients,and hundreds of millions suffer from diseases caused by unsafe food and unbalanced diets.

    _________(59)
    A:then
    B:anyhow
    C:however
    D:moreover

    答案:C
    解析:
    attribute to是固定搭配,意为,“把······归因于······”。

    空格所在处是说,营养不良导致儿童体重过轻。

    词义辫析题。calculations“计算出的结果”;rates“比率”;sums“总数”; figures“数字”。

    on a scale是固定搭配,例如on a large scale“大规模的”。

    in term of是固定搭配,意为“在······方面,按照”。

    该题所在句的大意是:各国政府和国际社会都应对此作出反应。

    该句中出现了countries一词,此处仍指countries。

    keep commitments的意思是“信守承诺”。

    从上下文可知,营养不良的问题依然严峻。因此此处需要表示转折的连词。故选择however“然而”。

    词义辫析题。recognized“确认”;estimated“估计”;clarified"阐明”;identifled“辫认”。

    根据上下文的逻辑判断应为annually“每年”。A、B、C三项意思分别为 “每天地”、“每月地”和“每季度地”。

    该处的意思是:有些地区,如撒哈拉沙漠以南的非洲和南亚。zones“区域,地带”;regions“地区”;districts“行政区”;terntories“领土”。

    combine with“联合,结合”;join with“一起”;share with“分享,分担”;associate with“结交”。该句的大意是:营养状况改善的停滞和人口的迅速增长······

    本句的大意为:······导致营养不良儿童的人数实际增加了。expected“预期的”;actual“实际的”;available“可得到的”;average“平均的”。

    meet the needs是固定搭配,意为“满足需要”。

  • 第14题:

    共用题干
    Malnutrition
    "Much of the sickness and death attributed to the major communicable diseases is in fact caused by malnutrition which makes the body less able to withstand infections when they strike",said Dr.Hiroshi Na-kajima,Director-General of the World Health Organization(WHO),in his statement on the first day of the
    World Food Summit organized by the Food and Agriculture Organization of the United Nations in Rome,Italy,from 1 3 to 17 November,1996.
    "At the same time,"he added,"in developing countries today,malnutrition is the cause of 174 million children under five years of age being underweight,and 230 million being stunted in their growth.Such figures represent deprivation, suffering and wasted human potential on a scale that is unacceptable from every point of view.Whether we think in terms of humanitarian concern,common justice or development needs, they demand a response,both from national governments and from international community."
    At the end of January 1996,98 countries had national plans of action for nutrition and 41 countries had one under preparation,in keeping with their commitments made at the International Conference on Nutrition in Rome in December 1992.The global situation,however,remains grim.Over 800 million people around the world still cannot meet basic needs for energy and protein,more than 2 ,000 million people lack essential micronutrients,and hundreds of millions suffer from diseases caused by unsafe food and unbalanced diets.
    In sheer numbers,iron is the most prevalent micronutrient deficiency.Mainly women of reproduction' age and children under five are affected by iron deficiency with prevalence hovering around 50% in developing countries.Among various regions in the world,it is South Asia which is hit hardest with prevalence reaching 80% in some countries.Tn infants and young children even mild anemia is associated with impaired intellectual as well as physical development.In older children and adults iron deficiency reduces work capacity and output.
    It also leads to increased accidents at work.
    While there is no single remedy,a combination of several preventive approaches is believed to work best.Dietary improvement includes consumption of iron-and vitamin C-rich foods and foods of animal origin, and avoiding drinking tea or coffee with or soon after meals.Iron supplementation of foods,particularly of staple cereals,is practiced in a growing number of countries.Iron supplementation is the most common approach,particularly for pregnant women.

    What is the cause of much of the sickness and death?
    A:Certain diseases.
    B:Malnutrition.
    C:Infections.
    D:Accidents.

    答案:B
    解析:
    根据第一段第一句,直接的因果关系发生在sickness and death和malnutrition之间。
    答案依据在文章第二段,其中讲到“Such figures represent deprivation , suffering and wasted human potential on a scale that is unacceptable… they demand a response …",由此得知,不管出于哪个方面的考虑,我们都要采取行动。
    文章第三段中提到“98 countries had national plans of action for nutrition",而另有41个国家的计划只是在准备中,并未被真正制定出来。
    文章第四段中提到缺铁会引发贫血(anemia)、智力和身体发育受阻碍(impaired intellec-tual as well as physical development)、工作能力下降(reduces work capacity )。 C项traffic acci-dents在文中并未提及,故选C。
    与该题有关的原文是在最后一段中,第二句话中提到" avoiding drinking tea or coffee with or soon after meals",这与C项描述相反,而其他三项在文中均被提及,故选C。

  • 第15题:

    共用题干
    "Much of the sickness and death attributed_________(51)the major communicable diseases is in fact caused by malnutrition which makes the body less able to withstand infections when they strike",said Dr. Hiroshi Nakajima,Director-General of WHO,in his statement on the first day of the World Food Summit.

    "At the same time,"he added,"in developing countries today,malnutrition is the cause of 174 million children under five years of age being________(52),and 230 million being stunted in their growth.Such_________(53)represent deprivation,suffering and wasted human potential __________(54)a scale that is unacceptable from every point of view. Whether we think in __________(55)of humanitarian concern,common justice or development needs,they demand a ___________(56),both from national governments and from international community."At the end of January 1996,98__________(57)had national plans of action for nutrition and 41 countries had one under preparation,in keeping with their___________(58)made at the International Conference on Nutrition in Rome in December 1992.

    The global situation,__________(59),remains grim. It is now __________(60)that 6.6 million out of the estimated 12.2 million deaths_________(61)are among children under five.In some__________(62),such as sub-Saharan Africa and south Asia,stagnation (停滞)of nutritional improvement_________(63)with a rapid rise in population has result in an ________(64)increase in total number of malnourished children.Over 800 million people around the world still cannot_________(65)basic needs for energy and protein,more than two thousand million people lack essential micronutrients,and hundreds of millions suffer from diseases caused by unsafe food and unbalanced diets.

    _________(54)
    A:at
    B:in
    C:on
    D:for

    答案:C
    解析:
    attribute to是固定搭配,意为,“把······归因于······”。

    空格所在处是说,营养不良导致儿童体重过轻。

    词义辫析题。calculations“计算出的结果”;rates“比率”;sums“总数”; figures“数字”。

    on a scale是固定搭配,例如on a large scale“大规模的”。

    in term of是固定搭配,意为“在······方面,按照”。

    该题所在句的大意是:各国政府和国际社会都应对此作出反应。

    该句中出现了countries一词,此处仍指countries。

    keep commitments的意思是“信守承诺”。

    从上下文可知,营养不良的问题依然严峻。因此此处需要表示转折的连词。故选择however“然而”。

    词义辫析题。recognized“确认”;estimated“估计”;clarified"阐明”;identifled“辫认”。

    根据上下文的逻辑判断应为annually“每年”。A、B、C三项意思分别为 “每天地”、“每月地”和“每季度地”。

    该处的意思是:有些地区,如撒哈拉沙漠以南的非洲和南亚。zones“区域,地带”;regions“地区”;districts“行政区”;terntories“领土”。

    combine with“联合,结合”;join with“一起”;share with“分享,分担”;associate with“结交”。该句的大意是:营养状况改善的停滞和人口的迅速增长······

    本句的大意为:······导致营养不良儿童的人数实际增加了。expected“预期的”;actual“实际的”;available“可得到的”;average“平均的”。

    meet the needs是固定搭配,意为“满足需要”。

  • 第16题:

    If headaches only occur at night,lack of fresh air is often the cause.

    A:start
    B:begin
    C:happen
    D:visit

    答案:C
    解析:

  • 第17题:

    If headaches only occur at night,lack of fresh air is often the cause.

    A:start
    B:begin
    C:happen
    D:visit

    答案:C
    解析:

  • 第18题:

    There are nations whose lack of contact with the outside with the outside world has()poverty.

    Afallen into

    Bconsisted in

    Cresulted in

    Dcome up to


    C

  • 第19题:

    What was the main cause of the Second World War?()

    • A、The main cause was big power struggle for control of the world.
    • B、It was the worldwide economic crisis.
    • C、It was the military expansion of Japan,and Germany.

    正确答案:A

  • 第20题:

    填空题
    As it was indicated by the respondents, green food was ranked relatively low in importance because low consumer awareness and lack of consumer interests.____

    正确答案: F
    解析:
    由题干中“green food”及题意可定位至F段。该段讲到,绿色食品并不被看好,接着解释了原因,即消费者缺乏意识和兴趣。故匹配段落为F段。

  • 第21题:

    单选题
    The major cause of trouble in a mechanical-hydraulic governor is contamination of the hydraulic fluid by ()
    A

    dirt

    B

    fuel oil

    C

    governor cooling water

    D

    fuel oil tars


    正确答案: D
    解析: 暂无解析

  • 第22题:

    单选题
    The major cause of malnutrition in the world is lack of ______.
    A

    protein

    B

    vitamin

    C

    minerals

    D

    food


    正确答案: A
    解析:
    因果关系的找寻和判断。关于世界上出现营养不良情况的主要原因,录音中提到“In most corners of the world malnutrition is plainly a matter of outright insufficiency of food for population…”,可知食物不足是造成世界上大多数地方出现营养不良的主要原因。因此选D。

  • 第23题:

    单选题
    The nation’s fledgling economy struggled because the investment from other countries into its major industries was lacking from most of them.
    A

    because the investment from other countries into its major industries was lacking from most of them

    B

    because few other countries were willing to invest in its major industries

    C

    due to the fact that few other countries would have invested in its major industries

    D

    because of the lack of investment from few other countries in its major industries

    E

    for the lack of investment in its major industries from other countries


    正确答案: C
    解析:
    B选项最符合逻辑,最简洁,表意最完整。

  • 第24题:

    单选题
    There are nations whose lack of contact with the outside with the outside world has()poverty.
    A

    fallen into

    B

    consisted in

    C

    resulted in

    D

    come up to


    正确答案: C
    解析: 暂无解析