搜题请搜索小程序“爱下问搜题”
问题 选择题

下列能使吸入的气体变得清洁的有

①声带  ②气管、支气管表面的纤毛  ③鼻黏膜  ④会厌软骨  ⑤鼻毛  ⑥嗅细胞[ ]

A．③⑤⑥

B．①②④

C．①④⑤

D．②③⑤

答案

D

听力题

根据短文内容及首字母提示，写出所缺单词，使短文完整、通顺。

There are over 800 boarding (寄宿) schools in the UK with students from home (国内) and 小题1:f       countries. Boarding schools started hundreds of years ago in the country. But the earliest boarding schools were set up for white, rich boys only. Now 小题2: b        boys and girls can go to boarding schools from the age of 7 to 18.

小题3: B_______ boarding schools have three terms in a school year, with about 13 weeks in each term. 小题4: A       all students at boarding schools wear a school uniform. Boys usually wear a shirt and a tie, and girls wear a white blouse, sometimes also a tie and a skirt.

In the UK, boarding schools provide (提供) students with tasty food. Students can also make 小题5:t        something to eat at any time in a kitchen, or drink tea or have a snack between meals.
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单项选择题

工作授权制度的作用是（）

A、对由谁来执行每一件任务进行控制

B、控制镀金

C、使管理层了解哪些是已计划的任务

D、使职能经理了解哪些是已计划的任务
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