下列叙述中正确的是 A．同一主族元素的气态氢化物，其相对分子质量越大，对应的熔、

缺词填空。根据上下文和所给的首字母，补全空格内的词，使短文通顺。

       I live in a building n  1   Dongdan. I like Dongdan b  2   there are lots of things to do here. The o  3   thing

I do not like is the air p  4  . My friend from Australia is coming to v  5   me soon but she does not speak

Chinese. She asked me a  6   what to see and do in Beijing. I'll take her to my f  7   restaurant, where my father

works a  8   a cook. She likes opera, so I'm going to take her to a t  9   to enjoy Beijing Opera. She also wants to

buy some souvenirs for her friends and f  10  .

1.                 2.                 3.                  4.                  5.                

6.                 7.                 8.                  9.                  10.             

I didn't             computer games last night.[ ]

A. play              

B. played

C. playing

生活饮用水的基本卫生要求不包括( )

A．饮水中不得含有致病的微生物
B．化学组成对人体有益无害
C．水的感官性状好
D．满足生活饮用需要
E．不得有细菌和大肠菌群数

以太网交换机支持802.1P协议的时候，最多能够支持（）优先级队列。

反映远端肾小管损害的早期指标是（）。

A.本-周蛋白

B.β₂微球蛋白

C.T-H蛋白

D.α₁微球蛋白

E.FDP