题目内容

【题目】读美国略图,回答问题。

(1)根据图中提供的纬度位置信息,可以判断美国是一个地跨______温度带的国家。

(2)下列地形剖面图能够反映美国自西向东地形分布特点的是______(填字母)。

A. B.

C. D.

(3)图中河流①的流向是______,可以知道大平原的地势是______

(4)试分析美国的人文地理特征。(至少两个方面)_________________

【答案】寒、温、热 D 北向南流 北高南低 人口、城市大多分布在中部和东部地区 农业生产专门化程度很高,美国是世界工业大国,信息技术、宇航技术、生物工程技术、核能利用等居世界领先地位(答到1点即可)

【解析】

美国地处北美大陆南部,北邻加拿大,东濒大西洋,西临太平洋,南接墨西哥和墨西哥湾;美国是世界上的农业大国,是世界上主要的农产品生产国和出口国,并且实现了农业生产专门化,机械化水平高,效率高,产量大。

1)根据图中信息显示,美国本土大部分位于北温带,南部的夏威夷州位于热带,北部的阿拉斯加位于寒带。所以美国是一个地跨寒、温、热带的国家。

2)北美洲地形分为三列:西部高山,中部平原,东部高原山地。通过北美洲地形剖面图中可以看出其地势特点是东西两侧高、中间低。根据经纬度判断美国位于西经度,经度向西增大。所以本题选择D选项。

3)根据图示①为美国的密西西比河,其流向是自北向南流,可以知道大平原的地势是北高南低。

4)美国人口、城市大多分布在中部和东部地区,美国农业生产专门化程度很高,形成了多个农业带,是世界上出口粮食最多的国家,美国是世界工业大国,信息技术、宇航技术、生物工程技术、核能利用等居世界领先地位。

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【题目】

The koala

Appearance:

Size: 70—90cm Weight: 5—14kg

The koala with thick hair looks cute but it has very sharp

teeth and claws (爪子).

The male koala is larger than the female one.

Food: The koala eats eucalyptus leaves (桉树叶). Each koala

eats about 500 grams of leaves per day.

Habit: The koala sleeps for up to 16—18 hours. It prefers to move around in the evening.

Baby fact: A healthy female koala can have one child each year. A baby koala is very small when it is born—only a quarter of an inch. It has no hair and it can’t see either. It lives in its mother’s pouch (育儿袋) for half a year. During this time, it only drinks its mother’s milk.

Danger: The number of koalas in Australia is getting smaller every year, mainly because of people. People cut down a lot of trees, so many koalas have no places to live in and they don’t have enough leaves to eat. There are fewer than 100,000 koalas in the world. Some scientists say if people don’t protect them, we won’t have any koalas within 30 years.

1When does the koala often move around during a day?

A. In the morning. B. In the evening.

C. In the afternoon. D. At weekends.

2If someone sees a newly born koala, he will find that ___________________.

A. it can see everything B. it is really small

C. it has thick hair D. it is very big

3A baby koala can’t live without ____________________.

A. water B. grass C. milk D. meat

4Which of the following is TRUE?

A. An adult koala often weighs more than 16kg.

B. The female koala is smaller than the male one.

C. The claws of the koala are sharp but their teeth are not.

D. The koala often sleeps more than 20 hours.

5The koala is in danger now. The main reason is that __________________.

A. big animals eat them

B. people hunt them for their fur

C. people cut down many trees

D. They often kill each other

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