One day, the students of Class 6 were reading in the classroom. Mrs Brown came in and told the whole class that they would have to change _____ in March. The naughtiest class in the grade could not _____ it. The pupils all disagreed with the decision, so they shouted when Mrs Brown said it was because a new pupil would be _____ the class. The class was in disorder. “Why must we move to another classroom just because someone new is coming?” one of them asked _____. Mrs Brown waited patiently before the class without saying anything. The students saw it and they became quiet. Mrs Brown told them to be _____ to their new classmate and then she left.

The following week, the class understood _____.The principal himself brought the new student to their class. _____, Mr White pushed the new student to the class because the student was in a wheelchair. Mr White_____ the new student as Jeff and asked them to be friendly to him. He said that Jeff now was a _____ of the class and they should work together. He added, “A house divided(分开) against itself cannot stand.” ______ could fully understand what Mr White meant at first.

Over time, they began to understand what their principal meant. Jeff was a ______ student and often lent a helping hand to students who did not understand ______ work. They felt very thankful to him. They took turns to wheel him about ______ they knew well that when someone did something for you, you ______ do something back in return. Not only did their results ______, but their behaviour became better. It was a special year Class 6 would never forget.

1.A. partner B. lesson C. teacher D. classroom

2.A. try B. catch C. believe D. manage

3.A. leading B. helping C. visiting D. joining

4.A. sadly B. angrily C. seriously D. coldly

5.A. nice B. useful C. honest D. careful

6.A. why B. where C. when D. how

7.A. So far B. Above all C. As usual D. In fact

8.A. mistook B. described C. introduced D. remembered

9.A. hope B. member C. monitor D. symbol

10.A. Nobody B. Somebody C. Anybody D. Everybody

11.A. lucky B. strict C. funny D. bright

12.A. his B. her C. their D. our

13.A. if B. because C. until D. though

14.A. should B. could C. might D. would

15.A. appear B. develop C. improve D. continue

Have you ever seen a greenhouse? Most greenhouses look like a small glass house.

Greenhouses are used to grow plants, especially in winter.Greenhouses work by trapping heat from the sun, the glass panels(板) of the greenhouse let light in, but keep heat from escaping.This causes the greenhouse to heat up, much like the inside of the parked in sunlight, and keeps the plants warm enough to live in winter.

The earth's atmosphere is all around us.It is the air that we breathe.Greenhouse gases in the atmosphere behave much like the glass panels in a greenhouse.Sunlight enters the Earth's atmosphere, passing through the blanket of greenhouse gases.As it reaches the Earth's surface, land, water, and biosphere(生物圈), they take up the sunlight's energy.Once the heat is taken up, this energy is sent back into the atmosphere.Some of the energy passes back into space, but much of it remains trapped in the atmosphere by the greenhouse gases, causing our world to heat up.

The greenhouse effect is important.Without the greenhouse effect, the Earth would not be warm enough for humans to live.But if the greenhouse effect becomes stronger, it could make the earth warmer than usual.Even a little extra warming may bring problems to humans, plants, and animals.

根据材料内容选择最佳答案,并将其标号填入题前括号内。

1.What are greenhouses used for?

A. Growing plants, especially in summer.

B. Growing plants, especially in winter.

C. Heating the house for people to live.

D. Cooking in winter.

2.Why is the temperature in the greenhouse higher than that outside?

A. Because greenhouse can heat itself.

B. The plants inside can produce heat.

C. The glass penal can produce heat.

D. The greenhouse can trap heat from the sun.

3.The underlined word atmosphere probably means________.

A. 大气层 B. 环境 C. 生态链 D. 表面

4.If we didn't have the greenhouse effect,what would happen?

A. We wouldn’t have enough air to breathe.

B. We would have problems, such as global warming.

C. The earth would become too hot to live.

D. The earth wouldn’t be warm enough for us to live.

5.From the article mainly we can learn_____________.

A. The green house has glass penals which can trap heat from the sun.

B. Greenhouses are used to grow plants.

C. Greenhouses are actually greenhouse gasses.

D. What the greenhouse effect is and its influence.

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