住宅小区会所的健身房、网球场、桌球室等娱乐设施,一般适宜由( )负责维修与养护。
A.居民委员会
B.物业管理公司
C.业主委员会
D.社区管理机构
参考答案:B
在标准状况下,下列物质跟11.2 L氨气中所含氢原子数相同的是( )
A.标准状况下8.4 L CH4
B.49 g H3PO4
C.0.3 mol HCl
D.18 g H2O
按要求完成句子。
1. We watched TV yesterday afternoon. (就画线部分提问)
_____ _____ _____ _____ yesterday afternoon?
2. Annie visited the Great Wall last month. (变为一般疑问句)
_____ Annie _____ the Great Wall last month?
3. I'd like beef and onion dumplings.(就画线部分提问)
_____ _____ _____ dumplings would you like?
4. My mother did some shopping with her friends yesterday. (变为否定句)
My mother _____ _____ _____ _____ with her friends.
5. These noodles have chicken and potatoes in it. (改为同义句)
These are noodles _____ chicken and potatoes _____ it.