Ⅵ.首字母填空
根据短文内容及首字母提示,在空格处填入一个适当的词使短文完整。
Tornadoes are windstorms that move fast in a circle. They can be weak, strong or violent.
About 70% of tornadoes are weak. The weak storms l____ long and thin, like a rope hanging down from the sky. Their winds move at 177 kilometres per hour or l____.
About 28% of tornadoes are strong. They’re w____ at the top and get narrower near the ground. Their winds move at 177 to 322 kilometres per hour.
About 2% of tornadoes are violent. These storms have winds that move faster than 322 kilometres per hour. They have the power to lift away a w____ house.
Tornadoes can form at any time of year, but most form from March to July. It’s d____ to know ahead of time when a tornado will form. That adds to their danger.
If you learn that there may be a tornado in your a____, you should find a safe place, such as a cellar or a tornado shelter. If you can’t get to one of these, then a ground floor room in the m____ of the house is the best. Stay a____ from windows and doors. If you are d____ outside, don’t stay in the car. You should get out and find c____. If you can’t find a shelter, lie down in a ditch(沟渠).
1. ____ 2. ____ 3. ____
4. ____ 5. ____ 6. ____
7. ____ 8. ____ 9. ____
10. ____

1. look 2. less 3. wider 4. whole 5. difficult
6. area 7. middle 8. away 9. driving 10. cover

Ⅶ.任务型阅读
阅读并根据下面的短文,在表格中的空格里填入一个最恰当的单词。
GPS has been in the lead for quite a long time in the field of positioning and navigation. So, when you open a map on your phone, you might suppose it’s guided by the Global Positioning System (GPS) without giving it a second thought. But actually, nowadays, most of such services in China are using the Beidou Navigation Satellite System(BDS).
China started building up BDS 30 years ago. Before we put BDS into use, we used navigation services developed by other countries. However, it was not safe to do so. To protect the geography information about our country from being shown, we decided to build our own navigation system.
In 1994, China started the journey to its own navigation system, Beidou. Named after the Big Dipper constellation, which has guided people in the dark for centuries, BDS was to make sure China could navigate the future on its own.
In 2020, Beidou finally completed its global network. BDS became another global navigation system in the world after the GPS of America, Galileo of the European Union and GLONASS of Russia.
BDS is the first navigation system to provide a global short message communication service. It means you can text others in places where neither the phone signal nor the internet is available. For example, in February 2023, a hiker got lost in heavy snow in Inner Mongolia. He sent a text message using the BDS service on his phone and was saved in time.
Moreover, Beidou plays an important role in disaster prevention. Rescuers(救援者) can communicate through BDS quickly and clearly even in terrible situations. It’s also helpful in farming, letting farmers plant crops better.
Wherever you are, BDS can help guide your way. By 2023, it has served over 120 countries and regions around the world. “By 2035, China will build a positioning, navigation and timing system with BDS to provide more smart services for all users,” the director general of the China Satellite Navigation Office once said.

1. ____ 2. ____ 3. ____
4. ____ 5. ____ 6. ____
7. ____ 8. ____ 9. ____
10. ____

1. place 2. safety 3. depend 4. starting/beginning 5. four
6. without 7. effect/influence 8. service 9. Plan 10. offer