What will be the benefit if the research on smart windows turns out to be successful, according to the last paragraph?
A.The buildings will look different.
B.Windows can be as large as you want.
C.We may not need air conditioners any more.
D.They are less expensive than traditional windows.
第1题:
According to Paragraph 2, some organizations check their systems to find out
[A] whether there is any weak point.
[B] what sort of data has been stolen.
[C] who is responsible for the leakage.
[D] how the potential spies can be located.
第2题:
According to the passage, which of the following statement is true? __________.
A. People can know happiness at any age.
B. A happy person lives a successful life.
C. Enjoying what you have can make you happy.
D. Parents want to pursue the study of happiness.
第3题:
E
All too often , a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇)for fuel from corn . Corn is a renewable resource —you can harvest it and grow more, almost limitlessly . So replacing gas with corn ethanol seems like a great idea .
One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land — including, in some cases, rain forest in places such as Brazil — into farmland, which in turn gives off lots of carbon dioxide(CO2)into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.
You cannot really declare any practice “sustainable” until you have done a complete lift-cycle analysis of its environmental(环境的)costs. Even then, technology and public policy keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainable requires plenty of thought on an ongoing basis.
57. What might directly cause the loss of the forest according to the text?
A. The growing demand for energy to make ethanol.
B. The increasing carbon dioxide in the air.
C. The greater need for farmland.
D. The big change in weather.
第4题:
Forces other than damaging winds are also at work inside tornadoes (龙卷风) . Sometimes,as the wind passes a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.
The pressure at the center of a tornado is usually 13 pounds per square inch. However,inside the house the air pressure is normal, about 15 pounds per square inch.The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado passes over a small building that measures 20 by 10 by feet. On each square inch of the building, there is 2 pounds of pressure from the inside
that is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57600 pounds. The pressure of the four walls adds up to 172800 pounds.
If windows are open in the building, some of the inside air will rush out through them.This will balance the pressure inside and outside the building.But if the windows are shut tightly, the huge inside pressure may cause the building to burst.
Unfortunately, heavy rain often occurs in the storms that later produce tornadoes,so people often shut their windows. This may cause far worse damage later.
21、 What did the paragraph before this passage most probably discuss?
A、 Measuring rainfall from a storm
B、 The kinds of damage caused by explosions
C、 The powerful winds of tornadoes
22、 Which of the following is the main topic of the passage?
A、 How tornadoes can be prevented
B、 When tornadoes usually occur
C、 Why tornadoes cause so much damage
23、 Tornadoes can destroy buildings because the()
A、 force of a tornado increases the air pressure in a building
B、 air pressure inside a tornado is less than the air pressure inside a building
C、 air pressure at the center of a tornado is over 172000 pounds
24、 What is the difference per square inch between the air pressure inside a building and the air pressure inside a tornado?
A、 2 pounds
B、 13 pounds
C、 15 pounds
25、 What would happen if the windows are shut tightly in the stormy weather?
A、 Tornadoes may be formed
B、 The house may be apart
C、 There may not be any pressure inside the building
参考答案:21、B 22、B 23、A 24、C 25、C
第5题:
A、What can I do for you?
B、Can I help you?
C、May I help you?
D、Can I be of any service to you?
第6题:
第7题:
第8题:
第9题:
第10题:
Research Is a State of Mind For many years there has been much misunderstanding as to just what research is. The popular conception seems to be that there is something mysterious about it, and before any research can be done it is necessary to have expensive scientific apparatus and large, elaborately equipped laboratories. Actually, this is not so. (6) It is a simple, organized way of trying to accomplish something you wish to do—so simple that anyone can do research anywhere at any time. First, you select the problem you would like to solve, then you list at least ten reasons why it has not been solved. (7) It takes just as much effort to solve a useless problem as a useful one. (8) After carefully—and I want to emphasize that word “carefully”—selecting the problem and the ten things between you and the solution, you then use the same procedure as in solving a crossword puzzle.(9)In the solution of the remaining obstacles you may need some simple apparatus, but the things you will probably need most are infinite patience and persistence. Few people realize the difficulties of doing any new thing. Maybe one of the reasons people are so easily discouraged is because of their education. During all our years at school we were examined two or three times a year. If we failed once, we were out. (10)If we are going to make progress, we must learn to fail intelligently so that we won't become discouraged at the 99.9 per cent failure. 9.()
第11题:
whether there is any weak point
what sort of data has been stolen
who is responsible for the leakage
how the potential spies can be located
第12题:
sleeping less is good for human health
people ought to be persuaded to sleep less than before
it is incorrect to say that people sleep too little
those who can sleep less should be encouraged
第13题:
According to the last paragraph, most Asian central banks are becoming _____.
[A] rather regretful
[B] less ambitious
[C] more cautious
[D] speculative
本题考查推理引申。文章最后一段第二句提到,一直以来作为美国国债最大的外国买家的亚洲中央银行最近改变了过去的做法。接着该段以具体数据说明外国买家购买美国国债的数量下降。从文中“swallowing American government debt like there was no tomorrow”可看出作者认为大举购买国债的做法是“不谨慎”的,而下文“have had second thoughts”他表明它变得更加慎重,因此[C]为正确答案。
第14题:
According to the last paragraph, it is important to____________.
A. eat something for breakfast B. be careful about what you eat
C. heat up food before eating it D. eat calorie-controlled food
第15题:
According to the last paragraph, it is important to____________.
A.eat something for breakfast
B.be careful about what you eat
C.heat up food before eating it
D.eat calorie-controlled food
第16题:
From what you _____, you can understand why an object weighs less in water than in air.
A、had learnt
B、will learn
C、have learnt
D、can learn
第17题:
why do you need to take the lube oil sample for analysis ? in the analyzing , what can you possibly find ?and if you find these substances ,what are the possible problems the engines may have ?why ?
第18题:
第19题:
第20题:
第21题:
第22题:
Research Is a State of Mind For many years there has been much misunderstanding as to just what research is. The popular conception seems to be that there is something mysterious about it, and before any research can be done it is necessary to have expensive scientific apparatus and large, elaborately equipped laboratories. Actually, this is not so. (6) It is a simple, organized way of trying to accomplish something you wish to do—so simple that anyone can do research anywhere at any time. First, you select the problem you would like to solve, then you list at least ten reasons why it has not been solved. (7) It takes just as much effort to solve a useless problem as a useful one. (8) After carefully—and I want to emphasize that word “carefully”—selecting the problem and the ten things between you and the solution, you then use the same procedure as in solving a crossword puzzle.(9)In the solution of the remaining obstacles you may need some simple apparatus, but the things you will probably need most are infinite patience and persistence. Few people realize the difficulties of doing any new thing. Maybe one of the reasons people are so easily discouraged is because of their education. During all our years at school we were examined two or three times a year. If we failed once, we were out. (10)If we are going to make progress, we must learn to fail intelligently so that we won't become discouraged at the 99.9 per cent failure. 8.()
第23题:
Make sure the game is worth the candle.
That is a step in the right direction, but I don't believe it is enough.
You take the easy obstacles first and by a process of elimination you eventually arrive at the one or two major ones.
But in selecting the problem, you need to be sure to analyze it carefully to see that it is worth the effort.
Research isn't a physical thing at all; it's a state of mind.
By contrast, all research work is 99. 9 per cent failure and, if we succeed once, we are in.