China's own navigator

精彩導讀

國產北斗衛星導航系統首次在中國國產ARJ21-700支線客機上成功進行測試，正式拉開了國產衛星導航系統在國產民用客機應用的序幕。

文章詞數 2 9 6 建議用時 6′ 難度系數 ★★★

Many years ago， peoplerelied onthe sun，moon and stars to find their way around.Later，the compass 1.____（introduce）.And now， we have satellite navigation systems to guide us.A satnav system uses groups of satellites to show the user's location.They send information to a receiver，such as a smartphone，to show us 2._____we are.On Oct 14， an ARJ21-700 plane， which was the first home-made jet tobe equipped withthe BeiDou navigation system，3____._（success） completed a test flight.The results showed the performance of the system developed by China matches that of similar systems produced abroad.

Since 4_____._（it） introduction in 2000， the Bei-Dou navigation system has seen increasing numbers ofapplications linked toeveryday life，from shared bikes to farming.

When it comes5._____shared bikes，smart locks that support BeiDou chips offer more accurate positioning than others，making it6._______（easy）to find abike.

Farmers can use BeiDou-enabled tractors to plow the soil，and drones（無人機）7._____（use）BeiDou to sow seeds，8.______can improve efficiency and make better use of resources.BeiDou's farming applications have spread from Heilongjiang province to Beijing，Liaoning， Shanxi， Hubei and other regions across China.

With its many uses，the BeiDou navigation system is evenplayinga bigrole inthe Belt and Road Initiative.“To da te， the Beidous ystem has covered most parts of the Asia-Pacific region，as well as 9._____（country） along the Silk Road Economic Belt and the 21st Century Maritime Silk Road，” said Yang Changfeng，chief designer of the BeiDou system

Today，there are more than 20 BeiDou satellites above our heads，and China plans to launch up to eight more this year 10._____（expand） the BeiDou network to better serve the Belt and Road Initiative.

閱讀掃障

1.application n.申請；應用

2.efficiency n.效率

3.rely on依賴；依靠

4.be equipped with裝備；配備

5.be linked to...連接到……；和……有聯系

6.play a role in起……作用；扮演……角色

讀文刷題

閱讀短文，在空白處填入1個適當的單詞或括號內單詞的正確形式。

語言提取

1.When it comes to shared bikes，smart locks that support BeiDou chips offer more accurate positioning than others，making it easier to find a bike.

翻譯：________________________________________

【點石成金】When it comes to （doing）sth...“當提到……；當談到……”，是固定句式；that引導的是限制性定語從句；making...是結果狀語；it是形式賓語，代替后面的動詞不定式短語。

句式仿寫

（1）談到練習樂器，我的練習時間是以前的兩倍。

（2）大公司使生產便宜的牛奶變成了可能，這使送牛奶的人很難去競爭。

________________________________________.

2.Farmers can use BeiDou-enabled tractors to plow the soil，and drones using BeiDou to sow seeds，which can improve efficiency and make better use of resources.

翻譯：________________________________________

【點石成金】本句說一個復合句。主句使用了use sth to do sth結構；which引導的是非限制性定語從句；make better use of“更好地利用”。

句式仿寫

我們班提出了一個更好利用二手材料的想法。