【題目】

Many years ago，people depended on the sun，the moon and stars to find their way around. Later，the compass was introduced. And now，we have satnav(衛(wèi)星導(dǎo)航)systems to guide us.

A satnav system uses groups of satellites to show the user's location. They send information to the receiver，such as a smart phone，to show us where we are.

The earliest built satnav system is the Global Positioning System(GPS)，which belongs to the US. Then there is Russia's Global Navigation (導(dǎo)航) Satellite System(GLONASS)，the European Union's Galileo and China's own satellite navigation system—BeiDou.

On October 14，2017，an ARJ21700 plane，which was the first plane made in China，with the BeiDou navigation system，successfully completed a test flight. The results showed the performance of the system developed by China matches that of similar systems produced abroad，according to the Commercial Aircraft Corporation of China.

Since its introduction in 2000，the BeiDou navigation system has seen an increasing number of applications linked to everyday life，from shared bikes to farming. For example，smart locks with BeiDou chips make it easier to find a bike. Farmers can use BeiDou to help plow(犁)the soil and sow seeds. BeiDou's farming applications have spread to most parts of China.

With its many uses，the Beidou navigation system is even playing a big role in the Belt and Road Initiative(一帶一路).“To date，the BeiDou system has covered most parts of the Asia-Pacific area”，said the main designer of the BeiDou system.

Today，there are more than 20 BeiDou satellites above the earth，and China plans to send even more this year to expand(擴(kuò)展)the BeiDou network to better serve the Belt and Road Initiative. As BeiDou expands abroad，it will be increasingly popular in the logistics(物流)industry.

【1】What is the purpose of the first three paragraphs?

A.To tell us something about GPS.

B.To show us the benefits of satnav systems.

C.To tell us how satnav systems were made.

D.To tell us about some satnav systems and how they work.

【2】The underlined phrase “the system” refers to “______”.

A.the Global Positioning System

B.the Beidou navigation system

C.the European Union's Galileo

D.Russia's Global Navigation Satellite System

【3】According to the article，the BeiDou navigation system is already widely used ______.

A.to help farmers with farming

B.to improve the speed of networks

C.in the international logistics industry

D.in the whole Asia-Pacific area

【4】The writer thinks the future of the BeiDou system is ______.

A.worryingB.doubtful

C.hopefulD.surprising

【答案】

【1】D

【2】B

【3】A

【4】C

【解析】

文章大意：文章講了許多年前，人們依靠太陽、月亮和星星來尋找自己的方向。后來，指南針被引進(jìn)，詳細(xì)的介紹了衛(wèi)星導(dǎo)航系統(tǒng)，包括原理和功能應(yīng)用等。

【1】推理判斷題。根據(jù)第二段第一、二行“They send information to the receiver，such as a smart phone…”和第三段介紹的早期衛(wèi)星導(dǎo)航系統(tǒng)可知，前三段是告訴我們一些衛(wèi)星導(dǎo)航系統(tǒng)以及它們是如何工作的。故選D。

【2】推理判斷題。根據(jù)第四段第二行“with the BeiDou navigation system”可知，指的是the BeiDou navigation system，故選B。.

【3】細(xì)節(jié)理解題。根據(jù)第五段倒數(shù)第三、四行Farmers can use BeiDou to help plow(犁)the soil and sow seeds. BeiDou's farming applications have spread to most parts of China可知北斗衛(wèi)星系統(tǒng)為農(nóng)民提供了很大的幫助，故選A。

【4】推理判斷題。根據(jù)最后一段倒數(shù)第二行“As BeiDou expands abroad，it will be increasingly popular in the logistics (物流)industry.”可知，北斗衛(wèi)星系統(tǒng)的未來充滿希望。故選C。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源： 題型：

【題目】When you feel a sneeze（噴嚏）or cough coming on, covering your mouth prevents the spread of germs(細(xì)菌). You probably knew that.

But how to cover your mouth is very important. You might use tissues(紙巾), and put your used tissues into the bin. “If you don’t have tissues, you should sneeze into your elbow, not your hand, even if you are used to doing that.” The doctors advised.

“If somebody sneezes into his hands, those germs will be passed on to other people, or other objects that people touch.” said Dr. Hill.

Germs are most commonly spread by sneezing and coughing. When they land on your hands, they are passed from hands to things like bills, door knobs(扶手), elevator buttons（電梯按鈕） and other surfaces. At the same time, the people around you can touch them.

This isn’t nagging（嘮叨）. The Centers for Disease Control also suggest that sneezing and coughing into your elbow is necessary. Even the New York City subway officers ask the passengers to “cough or sneeze into elbow or use a tissue.”

“The suggestion was taken seriously about 10 years ago. However, most people didn’t pay much attention to it. That means the adults may have missed the advice. But children are often taught in school the right way to cough or sneeze.” Dr. Benjamin said.

To be clear, people can’t keep away from all the risks in this way, but it’s the best choice. At the same time, we’d better wear masks（口罩） and often wash our hands. “Hand washing is one of the most important things people can do to keep healthy.” Dr. Hill said.

【1】According to this passage, when sneezing or coughing, you’d better NOT .

A. sneeze into your elbow

B. cover your mouth with tissues

C. use your hand to cover mouth

D. put the used tissues in the bin

【2】If you sneeze or cough into hands, germs can spread through the following activities EXEPT .

A.

B.

C.

D.

【3】Which is NOT true according to the passage?

A. The New York City subway officers ask passengers to use a tissue.

B. The adult may be used to sneezing into their elbow.

C. The children are often taught in school the right way to cough or sneeze.

D. Wearing masks is a good way to keep away from germs.

【4】What’s the main purpose of this article? .

A. To tell us the correct way to cover mouth when sneezing or coughing.

B. To tell us how to prevent the spread of germs.

C. To tell us it’s necessary to sneeze or cough into elbow.

D. To tell us how to keep away from all risks.

【5】In which layout(版面) of the newspaper can we find this kind of passage? .

A. Health B. Sports C. Business D. Education

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】

—I have________in learning English and I’m so worried．Could you help me with it？

—Sure，I’d love to．

A．joy

B．interest

C．trouble

D．fun

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】It is foggy(多霧的) today. The plane can't .

A. land B. landed C. take off D. taking off

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】The tiger is now in danger of disappearing. So more attention ____ to protecting the tiger.

A. paid B. must pay

C. was paid D. must be paid

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】

In many places the weather changes during the year. These changes are called seasons. In the north and south there are four seasons in a year. At the North and South Pole, there are only two seasons. In tropical（熱帶） places near the Earths equator（ 赤道）, there are two seasons a wet season and a dry season. Each season brings changes. They are important for plants and animals that live in different parts of the world.

Spring starts when the day and night are the same length. The weather gets warmer and sunnier. Trees and plants start to grow. Many animals have their babies in spring.

Summer begins on the longest day of the year. In the north this is on June 21 or 22. Summer is usually the warmest and sunniest time of the year. Fruit grows faster on trees and plants. Young animals grow bigger and stronger.

Autumn starts when the day and night are the same length again. During autumn, the leaves change color and fall down from the trees. Some animals collect food before winter comes.

Winter begins on the shortest day of the year. In the north this is on December 21 or 22.The weather is colder and in some places there is lots of snow. Plants and trees stop growing. Some animals, like bats and bears, find places to hide and sleep. This is called hibernation.

【1】There are　 　seasons on Greenland（格陵蘭島） at the North pole.

A. four

B. three

C. two

D. one

【2】Many animals　 　in spring.

A. have babies

B. change color

C. collect food

D. stop growing

【3】Fruit grows faster on trees and plants in　 　.

A. spring

B. summer

C. autumn

D. winter

【4】The meaning of the underlined word "hibernation" is　 　in Chinese.

A. 遷徒

B. 寒冷

C. 儲藏

D. 冬眠

【5】　 　start when the day and night are the same length.

A. Spring and summer

B. Summer and autumn

C. Autumn and winter

D. Spring and autumn

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】The park is far away from here indeed. It’s about ______ walk.

A. a three hour B. a three hour’s

C. a three-hours D. a three-hour

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】_____ you a happy New Year, boys and girls! I you can have fun.

A. Hope; wish B. Hope; hope C. Wish; wish D. Wish; hope

查看答案和解析>>

科目：初中英語 來源： 題型：

【題目】This morning Jack came here _________ than _______ boys .

A. more late； any

B. much later ； any other

C. more late ； another

D. much later ； the other

查看答案和解析>>

同步練習(xí)冊答案