题目内容
A Simple Scientific Experiment
Below is a description of a single scientific experiment. It shows us how iron reacts ( 反应) with air and with water. Aim : To find out if iron rusts( 生锈) (a) in dry air ; (b) in water that has no air in it ( air- free water) ; (c) in ordinary water. Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner. | |
Iron in dry air Method (1)Put some iron nails at the bottom of a test tube. (2)Push some cotton wool down the tube. (3)Leave the tube for one week. Result After one week, the nails have not rusted. Conclusion Iron does not rust in dry air. Iron in air-free water Method (1)Half-fill a test tube with water. (2)Boil the water for three minutes. (This makes sure there is no air in the water. (3)Put two or three clean nails in the water. | (4)Add some oil to the water. (This will keep air out of the water.) (5) Leave the tube for one week. Result The nails do not rust in the tube with air-free water. Conclusion Iron does not rust in air- free water. Iron in ordinary water Method (1)Half –fill a test tube with water and add two or three clean nails. (2)Leave the tube for one week. Result The nails rust in the tube with ordinary water. Conclusion Iron rusts in ordinary water. (238 words) |
A.keep the air dry | B.keep the tube wet |
C.make the nails rust | D.keep the tube clean |
①Leave half a tube of water in it
②Boil the water for some time
③Put some clean iron nails in the tube
④Add some oil to the water
A.①② | B.①③ | C.②③ | D.②④ |
A.dry air | B.cotton wool | C.ordinary water | D.air-free water |
【小题1】A
【小题2】D
【小题3】C
解析
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Bill was a boy of 15. His parents went to gambling(赌博) day and night. Nobody cared about hi. He always failed in his exams. So his teachers didn’t like him, nor did his classmates play with him.
Bill often slept in class because his heart was not in school. He almost gave himself up.
One day, Miss Jones, a new teacher, came to Bill’s class. She was a smiling, beautiful woman. Bill was in love! For the first time in his young life, he couldn’t take his eyes off his teachers; yet, still he failed.
It was Miss Jones’ class. She was asking a question. “I’d like the smartest boy to answer my question.” Then she said loudly, “Bill, please!”
Bill was surprised. And he stood up without a word.
“Just try it! I believe you can!”
After school, Miss Jones had a long talk with Bill. She told him that she cared about him and believed in him.
Bill thought a lot that evening. From then on he arrived at school on time every day. Miss Jones helped him with his homework in the afternoon. She even cooked delicious food for him. She told Bill, “Nothing is impossible if you put your heart in it.”
Later, Miss Jones gave another exam. Bill did it with all his heart. He was very excited to find that he had passed the exam. Now Bill discovered that not only could he learn, but he could do it well. A changed took place in Bill’s heart.
You see, one teacher saved one boy, it’s simple(简单的), really.
【小题1】Bill always failed in the exams at first because he ________.
A.went gambling | B.talked in class |
C.didn’t answer | D.gave himself up |
A.doing homework for him | B.encouraging and helping him |
C.giving Bill another exam | D.cooking delicious food for him |
A.Miss Jones was a loving and careful teacher |
B.Bill’s parents cared about him very much |
C.Miss Jones loved to answer Bill’s question |
D.Bill didn’t like to play with his classmates |
A.Parents’ Day | B.A Lazy Boy |
C.A Boy’s Change | D.A Strict Teacher |
Reading is a good habit, but the problem is there’s too much to read these days and too little time to read every word of it. There are hundreds of skills to help you read more in less time. Here are two skills that I think are especially good.
Preview — if it’s long and hard. Previewing is especially useful for getting a general idea of heavy reading like long magazine articles and business reports.
Here’s how to preview.
Read the first two paragraphs and the last two paragraphs carefully.
Then read only the first sentence of the other paragraphs.
Previewing doesn’t give you all the details. It keeps you from spending time on things you don’t really want - or need - or read.
Skim - if it’s short and simple. Skimming is a good way to get a general idea of light reading like popular magazines or the sports and entertainment of your daily paper.
Here’s how to skim.
Get your eyes to move fast. Sweep them across each line.
Pick up only a few key words in each line.
Everybody skims differently. You and I may not pick up the same words when we skim the same piece, but we’ll get a similar idea of what it’s all about.
【小题1】 How many skills does the writer introduce to help us in reading?
A.One. | B.Two. | C.Three. | D.Four. |
A.Read every word of it. | B.Read all the details. |
C.Pick up a few key words in each line. | |
D.Read the first and the last two paragraphs carefully. |
A.Previewing. | B.Skimming. | C.Reading. | D.Sweeping. |