However, at times this balance in nature is ________ resulting in a number of p
题型：不详难度：来源：
However, at times this balance in nature is ________ resulting in a number of possibly unforeseen effects.
A. troubled B. bothered C mixed D. disturbed |
答案
| D |
解析
| 略 |
举一反三
The computer system ____ suddenly while he was searching for information on the Internet.| A．broke out | B．broke down | C．broke up | D．broke in |
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The police ______ his address and phone number in order to do further investigation . | A．took off | B．took down | C．took in | D．took over |
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Reading an English novel last night , I ______ some useful expressions for writing . . | A．put up | B．ended up | C．picked up | D．made up |
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Most people are familiar with the idea that all matter in the universe ________ atoms.| A．makes up | B．makes up of | C．consists in | D．consists of |
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After a few courses on painting, Helen said she would ________ oil painting in her spare time.| A．look up | B．bring up | C．take up | D．put up |
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