精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

A Simple Scientific Experiment

Isaac Newton was a great English scientist, but when he was thinking hard about his work, he often forgot other things.

One morning Newton got up early. He began to work at once. He worked on a very difficult problem. He was still thinking it hard when it was time for breakfast . Mary brought a pan (平底鍋)of water and an egg to his room. But Newton wanted to stay by himself and said to Mary,“You can put the egg on the table. I’ll boil(煮)it myself.” Mary put the egg beside Newton’s watch on the table and said,“You must boil the egg for four minutes and then it will be ready.” Then she went out of the room.

But when she went into the room again an hour later, she saw him standing by the pan, and having the egg in his hand. He put the watch in the pan and was boiling it! But he did not know what he was doing.

根據短文判斷下列各句是否正確，正確的寫“T”,錯誤的寫“F”。

1.Newton was careless(粗心大意) at any time.

2.One morning when Newton was working, Mary brought him his breakfast

3.After Mary boiled the egg for Newton, she went out of the room.

4.When Mary came back, Newton was boiling his watch.

5.Newton thought that he was boiling the egg.

A Simple Scientific Experiment

1.In the first part of the experiment the cotton wool is most probably used to ______________.

   A. keep the air dry                            B. keep the tube wet

   C. make the nails rust                          D. keep the tube clean

2.What are necessary steps to make sure the water in the tube is air free?

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

3.We can conclude from the experiment that only ____________ makes iron rusty.

A. dry air       B. cotton wool           C. ordinary water         D. air-free water

Isaac Newton was a great English scientist, but when he was thinking hard about his work, he often forgot other things.
One morning Newton got up early. He began to work at once. He worked on a very difficult problem. He was still thinking it hard when it was time for breakfast . Mary brought a pan (平底鍋)of water and an egg to his room. But Newton wanted to stay by himself and said to Mary,“You can put the egg on the table. I’ll boil(煮)it myself.” Mary put the egg beside Newton’s watch on the table and said,“You must boil the egg for four minutes and then it will be ready.” Then she went out of the room.
But when she went into the room again an hour later, she saw him standing by the pan, and having the egg in his hand. He put the watch in the pan and was boiling it! But he did not know what he was doing.
根據短文判斷下列各句是否正確，正確的寫“T”,錯誤的寫“F”。
【小題1】Newton was careless(粗心大意) at any time.
【小題2】One morning when Newton was working, Mary brought him his breakfast
【小題3】After Mary boiled the egg for Newton, she went out of the room.
【小題4】When Mary came back, Newton was boiling his watch.
【小題5】Newton thought that he was boiling the egg.