下列不属于健康生活方式的是 A．合理膳食 B．不吸烟，不喝酒 C．早睡早起 D．

在我国寒潮出现的时间多在（）.

A、冬季

B、春季

C、秋季

D、早春及深秋前后

用since 和for 填空。

1.The German teacher has worked in China _______quite a few years.

2.Dick has worked as a taxi driver_______ about ten years.

3.Helen has worked as a shop assistant_______ 1992.

4.We have studied English_______about five years.

5.They have studied French_______1990.

6.Hans has made a lot of friends_______he came to China.

7._______last January, the city has developed its telephone services swiftly.

8.I have been a Youth League Member (青年团员)_______two years.

专门议事协调机构的协调，是通过授予有关职能部门在某一方面的综合协调权，就该事项对其他相关部门进行协调。 ( )

主动脉瓣关闭不全常采取（）

A．左侧卧位听诊

B．右侧卧位听诊

C．仰卧位听诊

D．前倾坐位听诊

E．Valsalva动作听诊

简单叙述如何从外观判断油的质量。