69. Jim doesn’t have to do the housework. Mary doesn’t, either. (同义转换)

The housework has _____ ______ ______ by ______ Jim ______ Mary.

68. The boy closed his eyes half an hour ago, but he couldn’t get to sleep. (同义转换)

The boy _____ his eyes _____ for half an hour, but he _____ to _____ _____.

67. “You can’t smoke any more,” the doctor said to him. (同义转换)

He was _____ _____ _____ _____ smoking.

66. Animals like tigers and bears are very dangerous. (改为一般疑问句)

_____ animals _____ tigers and bears very dangerous?

55. The story mainly tells us ____. A. how to make litmus paper　　 B. about the three kids' spirit C. scientist were wrong　　　　 D. the kids are heroes

四 动词填空，用所给动词的适当形式填空(10分)

　　　　　　　　　　　　　　　　　 I

No one knows how man __56___(learn) to make words. Maybe he began by__57____(make) sounds. As time went by, he made more and more sounds and more and more words. This is what we call languages.

Even some animals also have their languages.

When some food ___58____(find) , a bee goes back to its home. It wants ____59___(tell) the other bees where the food is .But it can’t speak, so it does a little dance in the air. In this way it ___60__(tell) the other bees where the food is.

　　　　　　　　　　　　　　　　　 II

　There are boys who think themselves men and who go to barber’s shops ___61___ (shave v.刮脸)。

Once a boy came into a barber’s, and ____62__(ask) the barber to shave him. The barber asked him to sit down, and soaped his face. Then he left the boy alone. He stood at the door___63___(laugh) and talking with another barber. The young gentleman waited for some minutes and then shouted, “Well, what are you leaving me here all this time for?” The barber replied, “ I ___64___(wait) until your beard __65___(grow).

五 句型转换 (10)

54. What is widely used as the acid-base indicator now?

A. red cabbage　　　　　　 B. litmus paper

C. any plant　　　　　　　　 D. any flower　

53. What's the right order for the following sentences? a. Three kids collect red cabbage everywhere. b. The kids mixed pigments with acid and base. c. The kid ground the red cabbage. d. The kids get pigments from it. A. a-b-c-d　B. b-a-c-d　C. a-c-d-b　D. b-c-d-a

52. From the text, a red cabbage is a kind of ____. A. plant　B. animal　C. paper　D. liquid

51. Whom did the three kids want to challenge? A. Their chemistry teacher.　　 B. Their headmaster. C. Robert Boyle 　　　　　　　D. Thomas Edison

50. How do the emperor penguins spend their years?

A. They give birth during the cold winters in Antarctica.

B. They spend half their time on the cold Antarctic (南极的) ice and the other half in the water.

C. They can swim in the cold water in Antarctica.

D. They fly up in the sky like other birds in Antarctica.

D

Three kids have been learning chemistry for only a few months. But they have already begun to challenge a world famous scientist! 　 Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator (酸碱指示剂). They want it to take the place of litmus (石蕊) paper. "We've learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other." 　 British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world. 　 But when the kids did some experiments in class last winter, they saw that the litmus paper didn’t turn very blue with base matter. It's hard to get a clear result. 　 Will there be a better indicator than litmus paper? The three kids decided to try and find out! How? They went to collect over 40 plants in parks, gardens and markets. Then they ground (研磨) leaves, flowers and stems (茎) to get the pigments (色素) from them. 　 The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best colour change. They decided it was the litmus paper! "It's our first scientific journey, Huang said, "But it makes me want to try harder."