题目内容

Why are bullocks used to provide energy in India?
A Because bullocks have long been used by Indian people
B Because bullocks walk slowly and are easy to control
C Because there are few non-working bullocks in India
D Because there is not enough oil in India

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“…people who die wondering: What if ?”(Lin4-5, Para-3) refers to “those _____”.

A. who think too much of the dark side of life
B. who regret giving up their career halfway
C. who think a lot without making a decision
D. who are full of imagination even upon death

函数y=log2(x2-3x+2)的定义域为

Modern plastics can ______ very high and very low temperatures.

A. stand B. hold C. carry D. support

Since it is already midnight, we ____ now.
A had better leaving
B had better leave
C had better to leave
D had better have left

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