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问题 单项选择题

对组胺的描述，错误的是

A．组胺可用于检查胃酸分泌功能
B．组胺可增加胃蛋白酶的分泌
C．组胺增加胃酸的分泌
D．组胺是脑内神经递质之一
E．切除迷走神经后，组胺分泌胃液作用减弱

答案

参考答案：E

填空题

（）层中集中了约75%的大气质量和90%以上的水汽质量，主要的大气现象都发生在这一层。
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单项选择题

"Culture shock" occurs as a result of total immersion in new culture. It (51) to "people who have been suddenly transplanted abroad. " Newcomers may be anxious (52) they do not speak the language, know the (53) , or understand people’s behavior in daily life. The visitor finds that "yes" may not always mean "yes", that friendliness does not (54) mean friendship or that statements that appear to be serious are really intended (55) jokes. The foreigner may be unsure as to when to shake hands or embrace, when to (56) conversations, or how to approach a stranger. The (57) . of "culture shock" helps explain feelings of bewilderment and disorientation. Language problems do not account for all the frustrations that people feel. When one is (58) of everything that was once familiar, such as understanding a transportation system, knowing how to register for university classes, (59) knowing how to make friends, difficulties in coping with the new society may (60) .

60（）。

A. arouse

B. rise

C. arise

D. raise
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