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【单选题】
白蚁是森林主要害虫之一，种类很多，危害最大的是黑翅土白蚁和（）。
A.
黄翅大白蚁
B.
黑刺蚁
C.
举尾蚁
D.
凹大头蚁
参考答案：
参考解析：
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举一反三
【单选题】There are approximately three quarters of a ton of termites (白蚁) for every person on Earth. It now turns out that these critters may be helping to alter the climate and affect man’s life. For years sc...
A.
It is the production by termites that is now of greater concern.
B.
What scientists worry more about is the output from burning fuels.
C.
The output from burning fuels is now rising steadily.
D.
The burning of fuels generates much less carbon dioxide than termites do.