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【单选题】
有100张卡片（从1号到100号），从中任取1张，取到的卡号是7的倍数的概率为（ ）A.
7/50
B.
7/100
C.
7/48
D.
3/20
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反馈参考答案：
举一反三
【简答题】由于地下水位持续过高或因土壤土质粘重,使土壤根系活动层含水量过大,造成作物根系活动层中的水、肥、气、热失调,而导致农作物减产的一种灾害叫 ( )
【单选题】This passage is mainly about ______.
A.
the structure of poetry
B.
the components of poetry
C.
the nature and importance of poetry
D.
the appreciation of poetry
【简答题】A．The lack of a real form. of government structure. B．The creativeness of Eskimos. C．The excitement of a legal system with strict laws. D．The strong judicial powers of a headman.
【单选题】What leads to the formation of a black hole?
A.
The structure of a star.
B.
A collision between two stars.
C.
The attraction of two large stars.
D.
The shrinking of a large star by its own gravitational force.
【简答题】歌曲《唱支山歌给党听》是怎样诞生的?和雷锋有什么关系?
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