Mary every day after school, but now she all the time.A. used to play, is used to studyB. used to play, is used to studyingC. is used to play, used to studyD. is used to playing, used to study 题目和参考答案——青夏教育精英家教网—

题目内容

Mary __________ every day after school, but now she __________ all the time.

A. used to play, is used to study

B. used to play, is used to studying

C. is used to play, used to study

D. is used to playing, used to study

练习册系列答案

高效课堂导学案吉林出版集团有限责任公司系列答案

相关题目

句型转换

1.Are they your father and mother? (改为同义句)

Are they ________?

2.The picture of my family is on the wall . (对划线部分提问)

_______ _________ the picture of your family ?

3.Barry has a computer game.(改为一般疑问句）

_______ Barry _______ a computer game？

4.These are erasers. (改为单数句)

________ is ________ eraser .

5.He plays sports every day. (改为一般疑问句)

________ he ________ sports every day?

---- _________ there any grass and trees in front of your house?

---- No, but behind the house ________ some trees.

A. Is; are B. Are; is C. Are; are D. Is; is

课文填空。用括号中所给词的适当形式填空，使语篇意思完整，必要时请用否定式。

Did you know that tea, the most popular drink in the world (after water), was invented by accident? Many people believe that tea was first ____1.___(drink) about 5,000 years ago. It is said that a Chinese ruler called Shen Nong was the first ___2.____ (discover) tea as a drink. One day Shen Nong was ____3.____ (boil) drinking water over an open fire. Some leaves from a tea plant fell into the water and remained there for some time. It produced a nice smell so he tasted the brown water, it was _____4.____ (quite) delicious, and so, one of the world’s favorite drinks was invented.

A few _______5._____(thousand) years later, Lu Yu, “the saint of tea”，mentioned Shen Nong in ____6.____(he) book Cha Jing. The book describes how tea plants were grown and used to make tea. It also discusses where the___7.____(fine) tea leaves were produced and what kinds of water were used.

It is believed that tea was brought to Korea and Japan during die 6tfa and 7th centuries. In England, tea______8.______(appear) until around 1660, but in less than 100 years, it had become the national drink. The tea trade from China to ______9.______(west) countries took place in the 19th century. This helped to spread the ______10._____ (popular) of tea and the tea plant to more places around the world. Even though many people now know about tea culture, the Chinese are without doubt the ones who best understand the nature of tea.

–The final exams are coming soon.

–Yes, I have ants in my pants.

A. 我有热锅上的蚂蚁。 B. 有很多蚂蚁爬在我的裤子上。

C. 我养了一些蚂蚁。 D. 我很焦虑。

–Your scarf feels soft. Did you buy it in China?

–No, I bought it in France. But it __________ in China.

A. is making B. was made C. makes D. made

– __________ free breakfasts __________ in all schools in China?

–No, not yet. Only in the rural（偏远的）areas.

A. Are, made B. Do, serve

C. Are, served D. Do, make

Once a clever man was crossing a turbulent river. He wished to amuse himself by talking to the boatman.

"Do you know mathematics?" he asked.

"No sir." answered the boatman.

"Then you have lost one quarter of your life," said the wise man. "Do you know history?"

"No sir." answered the boatman.

"Then you have lost three quarters of your life." Just then a sudden gust of wind overturned the boat. "Do you know how to swim?" asked the boatman.

"No," answered the wise(=clever) man.

"Well then," replied the boatman, "you have lost your whole life."

1.The clever man knew a lot of knowledge except(除了)_______.

A. mathematics B. philosophy(哲学) C. history D. swimming

2.When a gust of wind overturned the boat, ______ lost his life.

A. the boatman

B. the boatman and the clever man

C. the clever man

D. None of them

3.The story told us ______ .

A. not to be proud(骄傲的)

B. to learn to swim

C. to be a boatman

D. not to learn knowledge

A new study finds that plants communicate with one another to warn of danger.

We often consider plants as the furniture of the natural world. They don’t move; they don’t make sounds, they don’t seem to act on anything. But as is often the case, plants talk to each other all the time. And the language is chemical.

Over the years, scientists have reported that different types of plants, from trees to tomatoes, give out chemicals into the air to help neighboring plants. These chemical warnings can spread information about one plant’s disease or infestation(虫害), so other plants can protect themselves. But how plants receive and act on many of the information exactly is still mysterious.

In this week’s Science Magazine, researchers in Japan offered some explanations. They have found out one chemical message and traced it all the way from beginning to end.

The scientists looked at tomato plants infested by a common pest(害虫). To start out, they grew plants in two separate plastic spaces connected by a tube(管子). One plant was infested and placed upwind and the other was uninfested and placed downwind. The downwind plants were later exposed(暴露) to the pest. The results showed that plants near sick neighbors before were able to protect themselves better against the pest.

They found one chemical appeared more often in the exposed plants. The chemical is called HexVic. The scientists discovered where HexVic come from, and put it over healthy plants. Those plants were then able to produce HexVic. Researchers made sure that uninfested plants could fight off bugs and diseases. How do they know when to protect themselves? They are warned first by their friendly plant neighbors.

It is not a simple story, and it may be happening in more plant species than tomatoes. It may also be happening with more chemical signals that are still unknown to us. In a word, we know that plants not only communicate, but also look out for one another.

1.The underlined “traced” in the fourth paragraph probably means _________ here.

A. reported B. followed C. doubted D. developed

2.For scientists, which are the right steps to watch tomato plants infested by a pest?

①Place the infested plant upwind.

②Place the uninfested plant downwind.

③Expose the downwind plants to the pest.

④Grow plants in two separate plastic spaces connected by a tube.

A. ③①②④ B. ③④①② C. ④①②③ D. ④③①②

3. You can put the sentence “The researches also studied leaves from exposed plants and unexposed plants.” At the beginning of ____________.

A. Paragraph 3 B. Paragraph 4 C. Paragraph 5 D. Paragraph 6

4.Which of the following can be the best title of this passage?

A. Communicating Plants and Terrible Diseases

B. Talking Plants and Friendly Warnings

C. Protecting Plants and Clear Information

D. Growing Plants and Mysterious Chemicals

试题分类