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
D
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.
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