踝关节由中立位跖屈约：A．20度 B．30度 C．35度 D．45度 E．60度

盘形制动单元由膜板制动缸和（）两部分组成。

When we found him, he was a sorry sight. His clothes were torn, his hands bleeding. Before we reached him, we saw him fall. He lay a moment. Then he pulled himself to his feet, walked unsteadily a few yards through the woods and fell again.

After we got him out, we went back to find the gun that he had thrown down. His tracks showed that for two days he had circled in the forest, within 200 yards of the road. His senses were so dulled by fear and tiredness that he did not hear the cars going by or see the lights at night.

We found him just in time.

This man, like others before him, had simply been frightened when he knew he was lost. What had been a near disaster might have turned out as only a pleasant walk, if he had made a few preparations before he stepped from the highway or off a known path.

Whatever sense of direction that a man may have, it’s still largely a question of observation. A skilled woodsman always keeps an eye on his surroundings. He notes the shape of a mountain, the direction water flows through a swamp, and the way a tree leans across a path. With these in mind, he is still likely to turn around many times, but he is seldom lost.

There are exceptions, of course, and once in a while a man does come across some strange problem that puts him into the “lost” situation. A rainstorm or sudden blizzard may catch him without a compass in his pocket. Darkness may find him in a rough area, where travel is dangerous without a light.

When this happens, the normal first reaction is the fear of being laughed at as a result of his poor knowledge in the woods. He may also be concerned about the inconvenience that he will cause his friends when he doesn’t show up. This false pride may lead him to keep on the move in a false effort to find his way against all difficulties.

The person who thinks ahead is seldom in great danger. He’ll be safe if he observes carefully, thinks ahead, and remains calm.

小题1:The writer suggested that if the man had not been found, he would have ______.

A．been shot by a gun

B．become confused

C．been attacked by wild animals

D．been in great danger小题2:According to the text, if a person gets lost in the forest, at the very beginning, he would _____.

A．worry about being laughed at

B．push himself to find his way out

C．feel it is convenient to ask for help from his friends

D．feel sorry that he didn’t study hard enough小题3:When a person tries to find his way in the woods, ________ is the most important.

A．intelligence

B．observation

C．direction

D．chance小题4:The writer tells the story of the lost man as an example of people who_______.

A．go into the woods by themselves

B．don’t know how to signal for help properly

C．are frightened when they think they are lost

D．keep their head when they are in trouble

信息组织的特性是（）、（）、（）。

网络化简和归并是短路电流计算的必须步骤，图中变化后的值为（）。

A.A

B.B

C.C

D.D

质粒是细菌的（）

A.核质DNA

B.胞浆中的rRNA

C.胞浆中的cDNA

D.胞浆颗粒

E.胞浆中染色体外的DNA