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Nearly ______ of the earth _______ covered by sea。

A. three fourth; is B. three fourths; is

C. three forth; are D. three fourths; are

【解析】本题题意为“地球将近四分之三的面积被海洋覆盖着。”英语中的分数，分子用基数词，分母用序数词；分子大于1时，分母要用复数，首先排除A和C，“分数+of+名词”作主语时，其谓语动词要与of后面的名词在数上保持一致，因此答案为B。

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科目：初中英语 来源： 题型：050

　　If a man in a spaceship looked down at the earth, he would see mainly water. He might think that the earth was one giant ocean with little land.

　　Nearly seven-tenths of the earth's surface is covered by water. One ocean, the Pacific (太平洋), has an area of 63 million square miles.

　　Many years ago people thought that the land under all this water was flat. Now they know that this is not true. There are as many mountains under the sea as there are on the land.

At first, there was very little salt in the sea. The salt was brought into the, sea by rivers. It is possible to measure the age of the earth by measuring the amount of salt in the sea. Scientists can calculate how many years it took for this amount of salt to be carried from the land into the sea.

(1)Nearly ____of the earth's surface is covered by water.

[　　]

A．seven-tenths	B．three-tenths
C．seven-tenth	D．three-tenth

(2)Long time ago people thought that the land under the sea was_____．

[　　]

A．mountains

B．a ball fo gas

C．full of coal

D．flat

(3)In fact, under the sea the land _________．

[　　]

A．is full of mountains	B．is almost flat
C．is full of coal	D．is a ball of gas

(4)At first, there was ________．

[　　]

A．a little salt in the sea	B．much salt in the sea
C．little salt in the sea	D．no salt in the sea

(5)We can know the age of the earth by measuring ________．

[　　]

A．the amount of water in the sea

B．the amount of flat in the sea