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【单选题】
在“ #define PI 3.1415 ”中,用宏名 PI 代表一个( )。A.
单精度数
B.
双精度数
C.
字符串
D.
常量
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举一反三
【单选题】In what way could we have learned much more about our past than we do now?
A.
If our ancestors had kept a written record of every past event.
B.
If our ancestors had not burnt their written records in wars.
C.
If our ancestors had told exact stories of the most important happenings.
D.
If our ancestors had made more songs and dances.
【单选题】要约人发出要约后，要使要约不发生效力，就应及时撤回要约或撤消要约。撤回要约的通知( )。
A.
随后发出即可
B.
必须在受要约人收到要约前发出
C.
应在受要约人承诺前送达
D.
应先于要约或与要约同时送达受要约人处
【单选题】_____ this term, we will have learned more than 2,000 words. [ ]
A.
At the end
B.
At the end of
C.
By the end of
D.
In the end
【单选题】What is the IUCN aimed at?
A.
Saving natural resources.
B.
Cultivating rare plants.
C.
Hunting for animal experts.
D.
Protecting threatened species.
【单选题】We learned from the first two paragraphs that
A.
the cows were more sensitive to the flash flood.
B.
Helen was more sensitive to the flash flood.
C.
Helen was scared when they met.
D.
the cows were scared when seeing us.
【单选题】听力原文：Jeff seemed to be no more surprised than I did when we learned that the business trip to Europe would be cancelled for an unknown reason. (25)
A.
Neither Jeff nor I was surprised.
B.
Both Jeff and I were surprised.
C.
Jeff was less surprised than I was.
D.
Jeff was more surprised than I was.
【简答题】一辆小卡车可以运煤2500 千克，一辆大卡车运的每次是小卡车的3 倍还多500千克，一辆大卡车和一辆小卡车各运3 次，一共可以运煤______千克．
【单选题】全距与资料的离散程度的关系是( )
A.
全距越大说明资料的离散程度越大
B.
全距越大说明资料的离散程度越小
C.
全距不能独自说明资料的离散程度大小
D.
全距与说明资料的离散程度无关
【单选题】The more learned a man is, ______ he usually is.
A.
more modest
B.
the modest
C.
the more modest
D.
and more modest
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