蛤蚧的功效是（）。
A.助肾阳
B.益精血
C.强筋骨
D.补肺气
E.定喘嗽
参考答案：A, B, D, E
按调查时间，可分为经常性调查、一次性调查和（）。
—Could you tell me_______?.
—Sure. Walk along this road ,you can find it on your left. There you’ll see many old things.
A．how I can get to the post office
B．where is the aquarium
C．if where is a museum near here
D．where I can get a dictionary
