更多“Mother asked me to cut the meat () small pieces.A. toB. onC. intoD. of ”相关问题
  • 第1题:

    请阅读短文,完成此题。
    More and more gadgets seek to replicate the sorts of things your mother used to needle youabout: getting exercise, eating more slowly or brushing your teeth. Now one company has decided toembrace that image--it has named its product "Mother".
    The device, from a firm called Sense, caught my eye at a press preview for the 2014 ConsumerElectronics Show in Las Vegas, in part because of its unique design. It looks like a cross betweenWALL-E's girlfriend EVE and Russian nesting dolls. Mother has slightly creepy glowing eyes--butsurely has your best interest at heart? Mother's potential use is intriguing: Each Mother unit talkswirelessly to a set of smaller tracking devices, dubbed cookies, which can sense motion andtemperature. You can put cookies on things and people--on your body to gather data about how muchyou walk, on your coffee machine to track many espressos you drink, on your front door to trackwhenever it is opened, on your toothbrush to see how often and how long you brush ... and so forth.
    Whenever the cookies get close to the Mother unit, they wirelessly send back their data to theInternet.
    The company says users of Mother, which is supposed to start shipping in the spring, will beable look at all their information at once, or drill down on certain topics. And if something is reallyimportant, you can have an alert sent to your phone when a sensor detects a change.
    So what does all that data do for you? That's a question that bedevils many Internet of Thingsgadgets on display here at CES. Mother's makers say the data she tracks can help you gain peaceof mind by answering specific questions in your life, such as,"Am I drinking enough water?" or,"Did somebody open my secret drawer?"
    Lots of companies want to connect parts of your body, home and life to the Internet--a trendcalled the "Internet of Things". Mother's maker, Rafi Haladjian, told me he thinks having separatedevices for all these things is too expensive and too cumbersome because they can't talk to eachother."There are not so many needs that are worth $200" for a distinct Internet-connected device,he said.
    Mother, which costs $222 for a base unit and four cookies, is designed to be repurposed asnew challenges or needs spring to mind, he said. It's kind of like a mobile device that can run anever-changing array of apps.
    Where did the name come from? "We need a device that does all sort of things," Haladjiansaid. "The metaphor that matched this noble caring figure is the mother. She is not a nurse, agardener or a cop--she is everything at the same time."

    What can we infer from the first paragraph?
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    A.The company that produces "Mother" is better than others.
    B.The electronic devices today are more and more humanized.
    C."Mother" can do everything what your mothers can.
    D."Mother" must be more caring than other similar devices.

    答案:B
    解析:
    文章第一段讲到,“如今,越来越多的电子设备正学着扮演母亲的角色,提醒你多锻炼、吃慢点、去刷牙。现在有家公司干脆决定用“母亲”给一款新产品命名了。”可见,如今的电子产品越来越人性化了。故答案为B。A项没有根据;C项文章未提到;D项属于过度推测。

  • 第2题:

    2、下面能正确显示水分子表达式的选项为()。

    A.H<sub>2</sub>O

    B.H<small>2</small>O

    C.H<small><sup>2</sup></small>O

    D.H<small><sub>2</sub></small>O


    D

  • 第3题:

    选择下列计算结果 cut2[x_]:=If[x<-1,-1,If[x<1,x,1]] {cut2[-1],cut2[0],cut2[2]} 或 cut2/@{-1,0,2}

    A.{-1,0,2}

    B.{-1,1,2}

    C.{-1,0,1}

    D.{-1,1,1}


    (1)由cos2x≠0得 2x≠kπ+ π 2 ,k∈Z (2分) 解得 x≠ kπ 2 + π 4 ,k∈Z 所以f(x)的定义域为 {x|x∈R,且x≠ kπ 2 + π 4 ,k∈Z} (4分) (2)因为f(x)的定义域关于原点对称,且 f(-x)= 6 cos 4 (-x)+5 sin 2 (-x)-4 cos2(-x) = 6 cos 4 +5 sin 2 x-4 cos2x =f(x) , 所以f(x)是偶函数.(7分) (3)当 x≠ kπ 2 + π 4 ,k∈Z,cosx≠± 2 2 , 即 co s 2 x≠ 1 2 (8分) f(x)= 6 cos 4 x+5 sin 2 x-4 cos2x = 6 cos 4 x+5(1- cos 2 x)-4 cos2x = (2 cos 2 x-1)(3 cos 2 x-1) cos2x =3co s 2 x-1 (10分) 当cos 2 x=1时,f(x)取最大值2; 当cos 2 x=0时,f(x)的最小值-1∴函数f(x)的最大值2最小值-1

  • 第4题:

    6、对于下述命令,如何利用pipe符号进行改写: by_cut <- group_by(diamonds, cut) count_cuts <- mutate(by_cut, N = n())

    A.count_cuts <- diamonds %>% group_by(cut) %>% mutate(N = n())

    B.count_cuts <- diamonds %>% mutate(N = n()) %>% group_by(cut)

    C.count_cuts <- diamonds %<% group_by(cut) %<% mutate(N = n())

    D.count_cuts <- diamonds %<% mutate(N = n()) %<% group_by(cut)


    管子;

  • 第5题:

    如果要使用jieba库的全模式进行分词操作,需要在命令中加入参数______。

    A.cut=true

    B.cut=True

    C.cut_all=true

    D.cut_all=True


    搜索引擎模式?精确模式?全模式

  • 第6题:

    下面能正确显示水分子表达式的选项为()。

    A.H<sub>2</sub>O

    B.H<small>2</small>O

    C.H<small><sup>2</sup></small>O

    D.H<small><sub>2</sub></small>O


    ABCD