由于单圈弹簧管式压力表其弹簧管自由端的位移与（）之间具有正比关系，因此弹簧管压力表的
题型：单项选择题
问题：
由于单圈弹簧管式压力表其弹簧管自由端的位移与（）之间具有正比关系，因此弹簧管压力表的刻度标尺是线性的。
A、作用力
B、压力
C、被测压力
D、被测物质
题型：单项选择题
阅读理解。
There was an old pear tree in a man's garden. In the past, the tree fruited
every year, so the man would get many pears. But now, the tree got old. There were no more pears for the man. So the ungrateful(忘恩负义的) man
decided to cut the tree down. When h
e walked to the tree with an axe(斧子)
in his hand, the tree said to him, "Please don't cut me down. I have brought so many pears for you in the past years. Now I only have a short time to live."
"I'm sorry. I have to do so," the man said, "because I need something to make a chair." Then he began to wave his axe. At that moment, a bird in the old tree said to him, "Don't cut it down! Every time you go out and your wife feels
lonely(寂寞的), she will come out to the garden and sit down under the tree
to enjoy its cool shade(树
荫), and I sing songs to make her happy. We give
much pleasure(愉快) to your wife when you are away from home."
The man didn't listen to the bird and drove(驱赶) it away. When he was
about to cut the tree, some bees flew out of it and said, "Listen! If you agree
not to kill this tree, we will give you delicious honey every day. Would you
please leave the tree with us?"
The man got moved(感动). He said, "You are so kind to the tree, although it has become old. Now I see that I shouldn't cut it down. It has done so much to me and my wife. Let the tree stay here, and let the bird continue to sing
songs here." With these words, the man left. And the old tree lived there to its last day.
1. Which can be the best title of the story?
A. The Singing Bird
B. The Man's Wife
C. The Old Tree
D. The Kind Bees
2. Which is the most important reason(理由) for the man to cut down the
tree?
A. The tree was getti
ng old.
B. The man needed wood to make a chair.
C. The tree didn't give any shade.
D. The man couldn't get any pears from it.
3. What made his wife happy when the man was not at home?
A. The tree and its shade.
B. The bees and their honey.
C. The bird and its songs.
D. The tree and the bird.
4. In the story, the word "continue" means " ".
A. 再一次开始
B. 继续
C. 表演
D. 停止
5. What can we learn from the story?
A. People should never be ungrateful.
B. Good wood(木头) comes from pear trees.
C. Old people are kind and friendly.
D. Birds and bees are always helpful.