填空题
Checks are becoming more popular and will in a short while ______ (代替现金作为人们结账的一种方式).
【参考答案】
replace cash as a way for people to settle their accounts
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established
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单项选择题
To geneticists like Lewontin and Hartl, the current method ______.
A.is not so convincing as to exclude the likelihood that two DNA samples can never come from two individuals
B.is beyond dispute because two individuals of the same ethnic group are likely to have the same DNA pattern
C.is not based on adequate scientific theory of genetics
D.is theoretically contradictory to what they have been studying
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