题目内容

【题目】第31届夏季奥林匹克运动会8月5日~21日在巴西的里约热内卢举行.里约热内卢将成为奥运史上首个主办奥运会的南美洲城市.阅读材料,结合所学知识,关于南美洲的叙述,正确的是(

A. 亚马孙河是南美洲最长的河流,也是世界最长的河流 B. 安第斯山脉是世界最长的山脉

C. 巴西高原是世界最高的高原 D. “炎热干燥”是南美洲的气候特征

【答案】B

【解析】

根据南美洲的自然地理特点,进行分析解答。

亚马孙河是南美洲最长的河流,是世界上水量最大的河流,是世界第二长的河流,故A错误;安第斯山脉是世界最长的山脉,故B正确;巴西高原是世界上面积最大的高原,世界上最高的高原是青藏高原,故C错误;“炎热多雨”是南美洲的气候特征,故D错误;结合题意。故选B

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【题目】Elephants are the largest living animals on land. For a long time, they are very helpful. They carry big trees, take people from place to place, and are even used as "living tanks(坦克) " in wars(战争). People work with elephants for ages, but they do not know elephants well enough. People don't think it's easy to hurt an elephant because its skin is thick and hard In fact, that's wrong. Sometimes, even though(即使)its skin is thick-up to 2.5 cm, a needle()can also be very dangerous for the elephant.

People say elephants are afraid of mice. This is wrong, too. In fact, elephants have very poor eyesight(视力),so they usually cannot see a mouse even if one comes very close to them. If a person has a good memory, people will say that he has an e1ephant memory. But up to now, no study shows that elephants have a better memory than other animals.

People also believe that when it is time for elephants to die, they will hide themselves in a so-called所谓的)" elephant graveyard(墓地)" Often, hunters try to find such places to get ivories(象牙),but few people really find places like that. In fact, when elephants are old or get sick, they will stay in deep and secret caves(洞穴)until they get better or die.

1According to the passage, elephants don't .

A. carry heavy trees

B. help people build houses

C. carry people to different places

D. help people fight in the war

2Which of the following is true about elephants?

A. Elephants are afraid of mice.

B. Elephants have very poor memory.

C. Elephants cannot see very clearly.

D. Elephants never go to caves.

3What elephants will do when they get sick?

A. They will go to see a doctor.

B. They will ask other animals for help.

C. They will ask humans for help.

D. They will stay in deep caves by themselves.

4What is the main idea of 'this article?

A. Some of our ideas about elephants are not correct.

B. Different countries have different elephants.

C. Elephants are the world's biggest living land animals.

D. Elephants are man's best friends.

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