Question

    On April 2, we said goodbye to Tiangong I, China's first space lab. According to the China Manned Space Agency（中国载人航天）, Tiangong I re-entered the Earth's atmosphere（大气层）and some of its debris（碎片）fell into the South Pacific Ocean.

There are many spacecraft（宇宙飞船）that are still in orbit（轨道）above the Earth. After finishing their trips, they will all re-enter the Earth's atmosphere like Tiangong I.

There are two types of re-entries: controlled re-entry and uncontrolled re-entry.

Some satellites and manned spacecraft come back to the Earth in a controlled re-entry. Experts calculate（计算）the path of the falling spacecraft and its speed. They can guide the spacecraft to fall in a chosen area.

Some spacecraft may have problems while in space after a certain amount of time. These spacecraft come back in an uncontrolled re-entry. It is hard to tell when and where these spacecraft will fall until the last few hours. The US space station Skylab came back partially uncontrolled in 1979. Parts of the station fell in western Australia, but no one was hurt.

During re-entry, most of the spacecraft will burn up while passing through the Earth's atmosphere. Only a small amount of the debris will reach the ground. The debris typically ends up falling into the ocean, China Daily reported.

1.The debris from Tiangong 1       .

A.fell into the South Pacific Ocean B.fell in western Australia

C.fell in the central part of the US D.fell into the North Pacific Ocean

2.When the spacecraft finishes its trip, it will       .

A.burn up and disappear B.speed up and fly back to the Earth

C.enter another orbit and stay in space D.re-enter the Earth's atmosphere

3.From the passage, we know there are       types of re-entries.

A.one B.two C.three D.four

4.Which of the following is TRUE about the US space station Skylab?

A.It came back in a controlled re-entry.

B.Some people were hurt by its debris.

C.Parts of it fell in western Australia.

D.It was directed to fall into the ocean.

5.This story most probably comes from       .

A.a story book B.a movie review C.a science magazine D.a government report

Answer

1.A

2.D

3.B

4.C

5.C

【解析】

本文以天宫一号为例，介绍了有些宇宙飞船在完成科学任务后返回地球时的坠落区域是可以控制的，但有些则不然。

1.细节理解题。句意：天宫一号的碎片掉到了哪里？A南太平洋；B澳大利亚西部；C美国中心地区；D北太平洋。根据Tiangong I re-entered the Earth’s atmosphere (大气层) and some of its debris (碎片) fell into the South Pacific Ocean.可知答案选A。

2.细节理解题。句意：当宇宙飞船完成飞行之旅，它将会怎么样？A燃烧并消失；B加速飞回地球；C进入另一条轨道并留在太空；D重新进入地球大气层。根据After finishing their trips, they will all re-enter the Earth’s atmosphere like Tiangong I.可知答案应选D。

3.细节理解题。句意：根据文章内容，我们知道有几种回收类型？A. 1种；B. 2种；C. 3种；D. 4种。根据There are two types of re-entries: controlled re-entry and uncontrolled re-entry.可知答案应选B。

4.细节理解题。句意：下列关于美国空间站天空实验室，哪一项是正确的？A它的返程是可控的；B一些人被它的碎片弄伤了；C它的几部分掉到了西澳大利亚；D它被指向坠入海洋。根据The US space station Skylab came back partially uncontrolled in 1979. Parts of the station fell in western Australia, but no one was hurt.可知答案应选C项。

5.推理判断题。句意：这篇文章打开出自? A故事书；B电影回顾；C科学杂志；D政府报告。根据文章内容可知，其主要叙述天宫一号等宇宙飞船返回的方式，属于航空航天领域的科学知识，故应出自科学杂志，故选C。