填空题

This means that______(他刚适应了一种日程) he has to change to another.

【参考答案】

no sooner has he got used to one routine than

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单项选择题

What do we learn about the loss of ecosystem services（）

A. It is caused and paid for by businesses.
B. It is estimated at $ 2.2 trillion every year.
C. It is transferred to society or externalized.
D. It can be seen as an externality of economics.

单项选择题

It can be learnt from the passage that the current method of earthquake prediction（）.

A. provides more accurate data than the new one
B. costs less than the new one
C. can he improved vastly
D. warns people only a few seconds before the earthquake