题目内容

A.manyB.enoughC.singleD.any

A. many
B. enough
C. single
D. any

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A.at mostB.at lastC.at leastD.at first

A. at most
B. at last
C. at least
D. at first

A.butB.thenC.asD.therefore

A. but
B. then
C. as
D. therefore

The reason that scientists cannot cure a common cold is_____.

A. we don't know how we get cold
B. we aren't sure the exact kind of cold viruses
C. we don't know when we will catch cold
D. we aren't sure the exact scientific method

The camping grounds overlook_____.

A. a tall mountain
B. an area between mountains
C. a city centre
D. a large flat ground

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