【題目】

Most people have map apps on their phones that can show their locations and guide them to where they want to go. But how do these app systems know your location at any time or place? They find you by using satellite navigation system(衛(wèi)星導航系統(tǒng)).

A navigation system uses groups of satellites to find the user’s locations. This location information is then sent to a receiver.

The first navigation system is the Global Position System(GPS)(全球定位系統(tǒng)), which belongs to the United States. The system is the world’s famous navigation system. But China’s satellites are important for improving the navigation system. Beidou, has overtaken(超過) GPS in size, Japan’s Nikkei Asian Review reported.

China sent Beidou’s first navigation satellite into space in 2000. China also became the third country to build a navigation system after the United States and Russia, People’s Daily reported. As of right now, over 30 countries in Africa and the Middle East are using the Beidou system.

With its world-leading technology, Beidou is leading Chinese people to a better life by playing important roles in different areas, according to Xinhua News.

For example, over 6.2 million vehicles in China are using Beidou for navigation, according to a report on the Beidou system’s construction and development.

At the newly built Beijing Daxing International Airport, Beidou has been used to keep track of(追蹤) loading and unloading vehicles indoors and outdoors. When the airport opens, each baggage cart has Beidou navigation equipment to help passengers get their luggage faster.

For a navigation system, the number of satellites is important for improving the system’s positioning accuracy(定位精度). The more satellites, the more accurate the positioning is. The satellite navigation system is useful in many ways.

【1】What does a navigation system use to find a user’s location?

A.A smart phone.B.Several satellites.C.BeidouD.An airport.

【2】Which of the following statements is NOT true according to the passage?

A.GPS is the first navigation system in the world.

B.Beidou system has world leading technology.

C.GPS is much larger than Beidou System.

D.To make the positioning more accurate, we need more satellites.

【3】Nikkei Asia Review may be _______.

A.a newspaperB.a satelliteC.a navigation systemD.an airport

【4】How many countries have built navigation systems before 2000?

A.Three.B.Two.C.Over 30.D.One.

【5】At Daxing International Airport, Beidou helps _______.

A.to open the doorsB.to find the luggage more quickly

C.to improve the positioning accuracyD.to build the new airport

【答案】

【1】B

【2】C

【3】A

【4】B

【5】B

【解析】

文章大意：短文主要向人們介紹了手機定位軟件是如何來定位他人的位置的，它們靠的是衛(wèi)星導航系統(tǒng)，并說明了其工作原理。

【1】

細節(jié)理解題。根據(jù)文中A navigation system uses groups of satellites to find the user’s locations. 可知，衛(wèi)星導航系統(tǒng)使用幾組衛(wèi)星來找到使用者的位置，故答案為B。

【2】

細節(jié)理解題。根據(jù)文中The first satnav system was the Global Positioning System（GPS）, which belongs to the United States. 第一個衛(wèi)星導航系統(tǒng)是屬于美國的全球定位系統(tǒng)（GPS）可知，故A項正確；根據(jù)文中With its world-leading technology, Beidou is leading Chinese people to a better life by playing important roles in different areas, according to Xinhua News. 可知，北斗系統(tǒng)技術領先，故B項正確；根據(jù)文中Beidou, has overtaken(超過) GPS in size, Japan’s Nikkei Asian Review reported.可知，北斗系統(tǒng)的規(guī)模比GPS大，故C項錯誤；根據(jù)文中 The more satellites, the more accurate the positioning is.可知，為了使定位更準確，我們需要更多的衛(wèi)星，故D項正確，故答案為C。

【3】

詞義猜測題。根據(jù)文中Beidou, has overtaken(超過) GPS in size, Japan’s Nikkei Asian Review reported.據(jù)日本《日經(jīng)亞洲評論》報道，北斗的規(guī)模已超過DPS可推測出，黑體部分的單詞應是“報紙”，故答案為A。

【4】

細節(jié)理解題。根據(jù)文中China sent Beidou’s first navigation satellite into space in 2000. China also became the third country to build a navigation system after the United States and Russia, People’s Daily reported.可知，在2000年之前，已經(jīng)有兩個國家建立了衛(wèi)星導航系統(tǒng)，故答案為B。

【5】

細節(jié)理解題。根據(jù)文中When the airport opens, each baggage cart has Beidou navigation equipment to help passengers get their luggage faster.可知，在大興國際機場，北斗衛(wèi)星導航系統(tǒng)幫助更快地找到行李，故答案為B。

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