Air ________ sounds. (空白處填入一詞使句子完整正確)

答案：
解析：

思路分析：根據(jù)物理知識(shí)，聲音在空氣中傳播，應(yīng)用動(dòng)詞carry．因主語(yǔ)為第三人稱單數(shù)，謂語(yǔ)動(dòng)詞一般現(xiàn)在時(shí)應(yīng)在詞尾加-s．因carry是y結(jié)尾的動(dòng)詞，y前是輔音字母，應(yīng)把y變成it，再加-es．答案為carries．


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選擇適當(dāng)?shù)脑~（組）并用適當(dāng)形式完成短文。每個(gè)詞（組）只使用一次，其中有兩個(gè)詞（組）是多余的。
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根據(jù)短文內(nèi)容，選擇最佳答案。（5分）
【小題1】 What can a dolphin use to make an eel come out of its hole?

A．Its mouth. B．Its head. C．A dead fish. D．A little dog.
【小題2】How do dolphins exchange information with each other?
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B．Because they enjoy playing on the water.
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【小題5】 Which of the following is TRUE according to the passage?
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Dolphins are our friends. They can use tools to solve problems although they don't have hands.   For example, scientists have ever found that a dolphin can make a shy eel(鰻魚(yú)) come out of its hole with a dead fish.

Dolphins use different sounds to exchange information with each other. Scientists in Hawaii have developed a sign language to give instructions to dolphins, and the results are amazing. They find that dolphins not only understand the meaning of individual (個(gè)別的) words, but also understand the importance of word order in a sentence.

Most animals enjoy playing — but dolphins seem to like making their games as challenging as possible. On a beautiful day in 1997, scientists at a beach watched a little dog going into the sea and swimming towards the dolphins. To their surprise, the dolphins came up to the dog and then started throwing it into the air. The dog seemed to enjoy the "game" and continued playing with the dolphins for more than an hour.

Dolphins live in a very different world from ours, but they are very good at our "IQ tests” . For example, they will jump out of the water when they hear a whistle (口哨) noise. They do this because they will get a fish as a prize.

There is still much to learn about these cute problem-solvers, but it is certain that watching a dolphin show is fun.

根據(jù)短文內(nèi)容，選擇最佳答案。（5分）

1. What can a dolphin use to make an eel come out of its hole?

A. Its mouth.   B. Its head.      C. A dead fish.     D. A little dog.

2.How do dolphins exchange information with each other?

A. By using tails.            B. By using tools.

C. By using words.            D. By using sounds.

3.Where did the dolphins throw the dog when playing?

A. Onto its back.            B. Into the air.

C. Onto the beach.           D. Into the water.

4.Why do the dolphins jump out of the water when they hear a whistle noise?

A. Because they want to get a fish as a prize.

B. Because they enjoy playing on the water.

C. Because they want to play with other dolphins.

D. Because the dolphin keepers want them to come out.

5. Which of the following is TRUE according to the passage?

A. Dolphins understand many languages.

B. Dolphins are a kind of clever animals.

C. Scientists have known dolphins well enough.

D. Dolphins seem to make their games relaxing.

 

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