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自然环境对生物的生态作用是各个生态因子共同组合在一起，对生物起的综合作用。()

A. 正确
B. 错误

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A year ago the firm had a ______ loss of 3 million dollars or 20 cents a share after all necessary deduction.

A. total
B. gross
C. net
D. clear

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在群落的自然分类系统中，有的以群落区系组成为分类基础，有的以其生态外貌为基础，还有的以其动态特征为基础。()

A. 正确
B. 错误

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The mayor is a woman with great ______ and therefore deserves our political and financial

A. intention
B. instinct
C. integrity
D. intensity

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According to Yoshiko Matsumoto, the linguistic behavior. observed in today's young women ______

A. may lead to changes in social relations
B. is viewed as a sign of their maturity
C. has been tree of all past generations
D. is a result of rapid social progress

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自然环境对生物的生态作用是各个生态因子共同组合在一起，对生物起的综合作用。()

A. 正确 B. 错误

A year ago the firm had a ______ loss of 3 million dollars or 20 cents a share after all necessary deduction.

在群落的自然分类系统中，有的以群落区系组成为分类基础，有的以其生态外貌为基础，还有的以其动态特征为基础。()

The mayor is a woman with great ______ and therefore deserves our political and financial

According to Yoshiko Matsumoto, the linguistic behavior. observed in today's young women ______

A. 正确
B. 错误