题目内容

【题目】--- Look! Mr. Lee is standing under the tree.

--- It______ him. He has gone to Canada for his holiday.

A. must be B. mustn’t be

C. can be D. can’t be

【答案】D

【解析】

试题分析:句意:—看!李先生正站在树下。——不可能是他。他去加拿大度假了。情态动词可以表推测,must表示肯定的推测,翻译成“一定是”;can’t表示否定的推测,翻译成“不可能是”,依据句意理解,答案为D。

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【题目】

For thousands of years, dogs have held a special place in people’s hearts. They are known as “ man’s best friend” . This is because they can be so brave, lovely, and loyal(忠诚). Dogs are used to living in groups and following the leader. Now humans are their leaders. Dogs depend on people for food— mostly meat— and perform services in return.

Long long ago, dogs worked for people. They ran after wild animals, caught them on land and water, and protected houses. They are used to send messages, look after sheep, and even save people in snow. They help police find out what they want. Fast-runningdogs are used in races.

Dogs have many abilities that make them useful. Sharp teeth are only one of these. Most dogs can smell something human can’t smell and hear higher notes than any person. And although dogs don’t see many colors, they are very good at noticing movements.

Dogs come in many shapes, sizes, and characters. A big Irish dog stands about 32 inches tall. However,some dogs stand about only 5 inches tall. Dogs that can guard homes are intelligent. Police dogs are usually quite brave. But many different kinds of dogs now make playful family pets.

Dogs have been kept to work for human for a long history. When Pompeii— the ancient Italian city that was buried about 1900 years ago— was dug out, a dog was found lying across a child. It was trying to protect the child.

1Why are dogs known as “ man’s best friend” ?

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2What do dogs depend on people for?

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3Do dogs have many abilities to help people?

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4How tall is a big Irish dog when it stands?

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5When was Pompeii buried?

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