题目内容

【题目】读图,回答下列问题。

(1)中国、巴西和秘鲁合作拟建两洋铁路,图中的大洋:A B
(2)图中路线①②为巴西境内拟建的两条铁路,那么路线②沿线地区典型的植被类型是 , 线路①经过的地形区有主要河流乙河冲击而成的平原和高原。
(3)巴西的首都C是 . 该国的城市和人口主要集中分布在地区。
(4)两洋铁路建成后,图中的甲运河的货运量将受到影响。

【答案】
(1)太平洋,大西洋
(2)热带雨林,亚马孙,巴西
(3)巴西利亚,东南沿海
(4)巴拿马
【解析】读图分析可知:
(1)依据位置,图中A是位于美洲大陆东部的巴西,B是位于美洲西部的太平洋。

(2)图中路线①②为巴西境内拟建的两条铁路,那么路线②沿线地区典型的植被类型是热带雨林,线路①经过的地形区有主要河流乙代表的亚马孙河冲击而成的平原和巴西高原。

(3)巴西的首都是图中C所在的巴西利亚,该国的城市和人口主要集中分布在东南沿海地区。

(4)两洋铁路建成后,图中的甲代表的巴拿马运河的货运量将受到影响。
故答案为:(1)太平洋;大西洋;(2)热带雨林;亚马孙;巴西;(3)巴西利亚;东南沿海;(4)巴拿马。

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【题目】

The rockets take astronauts and man-made satellites into space. The satellites are used for communication, weather monitoring and research. But how do satellites stay up without Falling down?

There are two opposite forces acting on the satellite. One of them is the force of gravitation(地心引力), which tries to pull the satellite toward the earth. The other force is created by the rotation (旋转)of the satellite around the earth. This force tries to take the satellite away from the earth. With these two forces, the satellite goes round and round. The gravitational pull of the earth is like a rope which keeps the satellite from flying away.

Everything that goes up has to come down. It is only a matter of time before a satellite comes back to the earth. As time goes by, the satellite loses its speed, which makes the gravitational pull stronger than the force pulling it away. This makes the satellite crash (坠落)down to the earth.

1The force that pulls the satellite towards the earth is created by ________.

A. the earthB. the satellite itself

C. the rotation of the satelliteD. the rope

2Why can't the satellites fly away?

A. Because of the force from the earth.

B. Because the satellite is too big.

C. Because of the force created by the rotation of the satellite around the earth.

D. Because people on earth have made ropes to tie the satellites tightly.

3Which of the following is TRUE according to the passage?

A. There are four forces acting on the satellite.

B. The force of gravitation makes the satellite go round and round.

C. As time goes by, the satellite will finally fall down.

D. The satellite will stay in space forever.

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