下列反射活动属于条件反射的是 A．狗吃到肉，分泌唾液 B．青梅入口，分泌唾液 C

下列不是成人长骨结构的是（）.

A.骨端

B.骨骺

C.骨干

D.骨髓腔

E.骨膜

房地产市场上的投资周期领先于自然周期的变化。( )

请阅读下面一篇文章，并按照要求匹配信息。

     Do you know Australia? Australia is the largest island in the world. It is a little smaller than China. It is

in the south of the earth. __1__The population of Australia is nearly as large as that of Shanghai.__2__The cities in Australia have got little air or water pollution. The sky is blue and the water is clean. You can

clearly see fish swimming in the rivers. Plants grow very well.

     Last month we visited Perth, the biggest city in western Australia, and went to a wild flowers' exhibition.__3__We had a wonderful time. Perth is famous for its beautiful wild flowers. In spring every year Perth

has the wild flowers' exhibition.

     After visiting Perth, we spent the day in the countryside. We sat down and had a rest near a path at the foot of a hill. It was quiet and we enjoyed ourselves. Suddenly we heard bells ringing at the top of the hill.

__4__ There were about three hundred sheep coming towards us down the path. __5__After a short

drive from any town, you will find yourself in the middle of white sheep. Sheep, sheep, everywhere are

sheep.

A. The government has made enough laws to fight pollution.

B. Australia is the sixth largest country in the world.

C. Australia is famous for its sheep and kangaroos.

D. Australia is big, but its population is not large.

E. What we saw made us pick up all our things and run back to the car as quickly as we could.

F. There we saw a large number of wild flowers we had never seen before.

G. The people of Australia are very hardworking.

为描述手掌部位的乳突纹线形态，将手掌区域划分为（）、（）和手掌外侧部三个部分。

动机在装配过程中根据工序重要性可分为（）

A.一般工序

B.重要工序

C.轻微工序

D.关重工序