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【单选题】
砖墙的水平缝厚度( )。A.
一般为10mm，并不大于12mm
B.
一般大于8mm，并小于10mm
C.
一般大于10mm，并小于12 mm
D.
一般为8mm，并不大于12mm
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【简答题】According to the passage, why does the cancer increase? [A] Because people expose too much to the computer. [B] Because people don't care about the low levels of radiation. [C] Because the cells are k...
【单选题】According to the text, why does the same deafness afflict the same people?
A.
Because governments all turned their attention to these people.
B.
Because these people are more likely to have unhealthy behaviors.
C.
Because these people suffer more from their poor income and education.
D.
Because governments always neglect the real needs of these people.
【单选题】Why does a lack of sleep cause people to gain weight?
A.
Because people burn fewer calories when they are awake.
B.
Because people feel hungry when they lack sleep.
C.
Because their hormones stay unchanged.
D.
Because people don't exercise when they don't have enough sleep.
【多选题】在频数分布数列中( )
A.
总频数一定，频数和频率成反比
B.
各组的频数之和等于100
C.
各组频率大于零，频率之和等于1
D.
频率越小，各组的标志值所起的作用越小
E.
频率表明各组标志值对总体的相对作用程度
【单选题】Why does the author say that Swiss people may not be able to tell the name of their president?
A.
Because Swiss people are indifferent to politics.
B.
Because Swiss people are inaccessible to political information.
C.
Because the election of Swiss president has nothing to do with the Swiss.
D.
Because president of Switzerland is not directly elected by the Swiss.
【单选题】Why does it take long for people to change their food?
A.
Because labs are not easily accessible to researchers.
B.
Because some people are reluctant to accept the new diet.
C.
Because food consumption is a culture of conservation.
D.
Because some scientists are against the growing lab meat.
【单选题】下列有关频数分布表和频数分布直方图的理解，正确的是（ ）
A.
频数分布表能清楚地反映事物的变化情况
B.
频数分布直方图能清楚地反映事物的变化情况
C.
频数分布直方图能清楚地表示出各部分在总体中所占的百分比
D.
二者均不能清楚地反映变化情况和在总体中所占的百分比，但能反映出每个项目的具体数目
【单选题】Why does the professor recommend that students pay attention to the people they see every day?
A.
The behavior. and characteristics of these people can be used in character sketches.
B.
Observing people in real-life situations can provide ideas for story plots.
C.
It is easier to observe the behavior. of familiar people than of new people.
D.
Students can gather accurate physical descriptions for their characters.
【多选题】在频数分布数列中( )。
A.
总次数一定,频数和频率成反比
B.
各组的频数之和等于100
C.
各组频率大于0,频率之和等于1
D.
频率越小,则该组数值所起作用越小
E.
频率表明各组变量值对总体的相对作用程度
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