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问题 单项选择题

根据现行规定，工程质量保证金一般是合同价款的（）。

A.1%～2%

B.5%

C.3%～5%

D.10%

答案

参考答案：C

解析：本题考查的是合同价款约定的内容。根据《计价规范》规定，工程质量保证金一般是合同价款的3%～5%；从每期支付工程进度款中，按一定的比例预留（直到达到约定金额）；进度款支付一般不超过90%。

填空题

全国的一类保护植物共有8种，广西就占了一半，它们是望天树、桫椤和______、______。
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单项选择题

The 1988 drought in North America was probably caused by shifts in the temperature patterns of large equatorial stretches of the Pacific Ocean. The drought, therefore, is not evidence for the hypothesis that a long-term global warming trend, allegedly caused by atmospheric pollutants such as carbon dioxide, is occurring.
Which of the following, if true, constitutes the best criticism of the argument above

A．Most pre-1988 droughts for which we have records were preceded by shifts in temperature patterns in the Pacific Ocean.

B．There has been no warming trend in the United States. over the last 100 years.

C．The consequences of global warming occur long after the actual emission of pollutants into the atmosphere.

D．Emissions of carbon dioxide gas into the atmosphere increased in 1988.

E．(E) A global warming trend could cause increases in the frequency and severity of shifts in temperature patterns in the Pacific Ocean.
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