Passage I                  Police Catch Clean Mclean

     Last night, police caught the robber, Chuck Clean Mclean. Clean Mclean robs people's houses. But before he leaves the house, he cleans the house, too.

     Clean Mclean robbed the house of Mr Robert Parley. He started to clean the house, but Robert came home early.

     I usually go home around 6:00 pro," said Robert. "Today I was sick, so I went home at 2:00 pro. I got home, and saw an open window. Then 1 saw a man. "

     A neighbor said to Robert, "Who is that man in your house? He's cleaning your house. He washed the windows and cut the grass. He gave me some flowers from your garden! He's the best. " But, of course Robert didn't know the man in his house. "Quick! Call the police , "he told his neighbor.

Officer J. Power came quickly. "We know ' Clean' ," said Power. "He always cleans houses and then robs them. "                                          

1. Another name for this story is ______

A. Neighbor Clean House               B. The Day Robert Cleaned House

C.Police Caught Cleaning               D.They Caught  Clean

2. Robert went home early because ______

A. his house was robbed                B. he usually does

C. Clean Mclean was sick              D. he wasn't feeling well 

3. Robert told his neighbor to call the police because he ______

A. wanted them to clean his house

B. didn't know the man in his house

C. didn't like the man in his house      

D. was cleaning his house

4. What does the word “his” mean in “Quick! Call the police, ’he told his neighbor”?

A. Clean Mclean's.                     B. Robert's.

C. The neighbor's.                      D. Officer Power's.

5. Where did Clean Mclean get flowers.'?

A. He bought them from the kitchen.   

B. They were in Officer Power's home.

C. He took them from Robert's garden.  

D. He took them from the neighbor.

When the weather is hot, you go to a lake or an ocean. When you are nears lake or an ocean, you feel cool. Why? The sun makes the ear& hot, but it cannot make the water very hot. Although the air over the earth becomes hot, the air over the water keeps cool. The hot air over the earth goes up. Then the cool air over the water moves in and takes the place of the hot air. When you are near a lake or an ocean, you feel the cool air. When it moves in, you feel the wind. And the wind makes you cool. Of course, scientists cannot answer all of our questions, ff you ask, "Why is the ocean full of salt?", scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks (裂开). Rain falls into the cracks .The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask, "What happens to the salt in the ocean?" The ocean does not get more salty every year. Scientists are not sure about the answer to the question. We know a lot about our world. But there are still many answers that we don't have, and we are curious(好奇的).

1. Now scientists know_______

A. what makes people feel cool near a lake or an ocean in summer

B. everything about the ocean

C. why the ocean doesn't get more salty

D. what happens to the salt in the ocean

2. In this passage the word "cracks" means _______in Chinese.

A. 山谷       B.裂缝       C. 地壳     D. 岩浆

3. Which of the following is not true?

  A. The sun makes the earth hot.

  B. The sun cannot make the water very hot.

  C. The wind makes you tout.

  D. The hot air over the water moves in and takes the place of the cold air

4. People are always curious about the world because______

A. they know nothing about it      

B. they know little about it

C. there are many answers they do not have     

D. both. A and B

5. The main idea of this passage is that ______

A. the salt in the ocean comes from rocks

B. scientists can explain (解释) everything we want to know

C. people feel cool when they are near a lake or an ocean

D. scientists can explain many things, but not everything

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