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A Chinese submarine(潜艇) is on its way to the Mariana Trench. The Mariana Trench is the deepest place on Earth. It is in the western Pacific Ocean. It is 10,971 metres deep.

The submarine gets to the depth of 10,000 metres. It is an important moment for the people inside. Three men are in the submarine. They want to travel to the bottom of the sea to find out what it is like. But it is not easy. The place is completely dark. No sunlight can get to such depth. The submarine must have very strong lights.

The submarine has robotic hands. Robotic means that something has electronic(电子的) parts. The men control them. They can get stones and other interesting things from the bottom of the ocean.

1.Where does the submarine go?

A The most dangerous place on Earth.

B The farthest place on Earth.

C The deepest place on Earth.

D The largest place on Earth.

解析：选C。细节理解题。根据文章第一段第一句A Chinese submarine is on its way to the Mariana Trench. The Mariana Trench is the deepest place on Earth.可知，一艘中国潜艇正在前往马里亚纳海沟的途中，这是地球上最深的地方，故选C。

2.Which of the following is TRUE?

A Three people make the submarine.

B The Chinese first got to the Mariana Trench.

C The submarine easily gets to the bottom.

D The deep sea is a new world to people.

解析：选D。推理判断题。根据文章第二段第四句They want to travel to the bottom of the sea to find out what it is like.可知，潜艇内的人想去海底看看是什么样子，由此推断深海对人们来说是一个新的世界，故选D。

3.There is _______ close to the bottom of the sea.

A no fish

B no life

C no sound

D no sunlight

解析：选D。细节理解题。根据文章第二段The place is completely dark. No sunlight can get to such depth.可知，这地方一片漆黑，没有阳光能到达这样的深度，故选D。

4.The underlined word “control” means _______ in Chinese.

A 制作

B 关闭

C 操控

D 观察

解析：选C。词义猜测题。根据文章最后一段最后一句They can get stones and other interesting things from the bottom of the ocean.可知，机械手使人们能够从海底获得石头和其他有趣的东西。由此推测人们是通过“操控”机械手获取海底东西的，故选C。