在一密闭容器中，储有A、B、C三种理想气体，处于平衡状态。A种气体的分子数密度为n1

Without proper __1________(plan), tourism can cause problems. For example, too many tourists can crowd public places __2_________ are also enjoyed by the inhabitants(居民) of a country. If tourism creates too much traffic, the inhabitants will become __3________ (annoy) and unhappy. They begin to dislike tourists __4_______ to treat them impolitely. They forget how much tourism can help the country’s economy. __5_________ is important to think about the people of a destination country and ___6________ tourism affects them. Tourism should help __7________ country keep the customs and beauty that attracts tourists. Tourism should also advance the wealth and ___8_______ (happy) of local inhabitants.

Too much tourism can be a problem. If tourism __9_________ (grow) too quickly, people must leave other jobs to work __10________ the tourism industry. This means that other parts of the country’s economy can suffer.

女性，45岁，因绞窄性肠梗阻行急诊手术，发病前曾饱食。

该病人麻醉结束后可返回病房的条件中，描述正确的是（）

A.意识模糊

B.未拔除气管内插管

C.呼吸道内分泌物较多

D.能根据指令进行深呼吸、咳嗽

E.心电图示有心律失常表现

Which is _______, traveling by air or by train? [ ]

A. popular

B. more popular

C. most popular

D. the most popular

铅笔画使用橡皮擦注意事項？

胎心率的监测有两种基本变化，即（）及（）。