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【判断题】
刺五加和刺都是刺五加科的。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】Who will do more harm to the environment, the developing countries or the developed countries?
【简答题】An air courier is a person who_________ A .manages a business company in foreign countries B. organizes international flights for tourists C. travels around the world with cheap tickets D delivers pap...
【单选题】From 1949 to 1972, the number of scientists who moved into the USA from various countries in the world reached ()
A.
200 000
B.
300 000
C.
400 000
D.
500 000
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