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问题 单项选择题 A1/A2型题

在人际传播中，以注视对方的眼神表示专心倾听的传播技巧为（）

A.仪表语

B.动态体语

C.同类语言

D.时空语

E.形象语

答案

参考答案：B

解析：以注视对方的眼神表示专心倾听，是通过无言的动作传情达意，这属于非语言传播技巧中的动态体语。

多项选择题

以下有关专利权人主动放弃专利权的哪些说法是正确的

A．专利权人主动放弃专利权的，应当向专利局提交书面声明

B．专利权可以放弃一件专利的全部，也可以放弃部分权利要求

C．一件专利有多个专利权人的，完全放弃该权利应当由全体专利权人同意

D．一件专利有多个专利权人的，不允许部分权利人放弃专利权
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单项选择题

Air pollution is caused by many things. Great clouds of smoke come from factories. Cars send smoke and fumes into the air. Burning waste fills the air with bits of dirt. Even burning leaves add smoke to the air. Sometimes, planes cannot find their landing spots through smoke. Smoke of all kinds is bad to breathe and can do great harm to the body.
Still, we cannot live without air. We must find a way to clean the air we have.
In time, we may have factories that are run by atomic energy. Our cars may run on smoke-free electric power. Scientists are also working on new ways to help the oil burned by cars from making fumes. Waste may be burned in the sand on ocean floors.
These changes might keep our air clean in the years to come. But until then, many scientists are looking for ways to make air cleaner now.

Why would electric cars cut down on air pollution

A．They go only a short way.

B．They are easier to keep clean.

C．Electric power has no smoke.

D．Electric cars need no energy.
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