Ⅰ. 完形填空。
阅读短文,从每小题所给的A、B、C、D四个选项中,选出可以填入空白处的最佳选项。
In recent years, the internet has become an important part of our daily life. It has brought great 1 to the way we live, work and study. We can get all kinds of information we need on the internet 2. For example, students can look for knowledge about different school 3 to help with their study. They can also watch educational videos to understand difficult lessons better. People can also find the latest news from every 4 of the world, such as important events in different countries or new scientific findings. It 5 them to learn more about the world and keep up with the times.
Online shopping is very 6 among students and adults now. 7 of walking into real stores, we can choose different things online and get them sent to our 8 easily. It saves us much time. We don't have to go out, so we needn't 9 about bad weather or heavy traffic. Online communication is also very convenient. We can use different 10 to talk with our family and friends far away, sharing our happiness and 11 at any time.
However, we must be careful with the 12 risks on the Internet. 13 like privacy leaks(隐私泄露) and online cheating are quite dangerous for teenagers. They are bad for our personal safety. So it's necessary for us to use the internet in a 14 way and learn to protect ourselves online.
All in all, 15 the internet gives us a lot of good things, we need to be careful and use it well and responsibly.
()1. A. trouble B. changes C. opinions D. chances
()2. A. quickly B. finally C. luckily D. deeply
()3. A. hobbies B. subjects C. games D. sports
()4. A. end B. corner C. direction D. side
()5. A. asks B. tells C. helps D. wishes
()6. A. popular B. difficult C. strange D. patient
()7. A. Ahead B. Because C. Instead D. Outside
()8. A. schools B. libraries C. offices D. homes
()9. A. talk B. worry C. learn D. hear
()10. A. apps B. books C. caps D. maps
()11. A. laziness B. carelessness C. homelessness D. sadness
()12. A. large B. useful C. important D. possible
()13. A. Problems B. Mistakes C. Accidents D. Difficulties
()14. A. fast B. wild C. proper D. free
()15. A. unless B. when C. although D. therefore

1-5 BABBC 6-10 ACDBA 11-15 DDACC

我们逐题结合语境和固定搭配分析：
1. 第1题：互联网给我们的生活、工作和学习方式带来了巨大的改变，A.麻烦、C.观点、D.机会均不符合语境，选B。
2. 第2题：我们可以在互联网上快速获取各类所需信息，quickly表示快速地，符合网络的特点，选A。
3. 第3题：学生可以查找不同学校学科的知识来辅助学习，school subjects是固定表达，意为学科，选B。
4. 第4题："every corner of the world"是固定搭配，意为世界各地，符合获取全球新闻的语境，选B。
5. 第5题：网络帮助人们更多了解世界、与时俱进，help sb. to do sth. 表示帮助某人做某事，符合语境，选C。
6. 第6题：如今网购在学生和成年人中非常受欢迎，popular意为受欢迎的，符合语境，选A。
7. 第7题：instead of是固定短语，意为而不是，此处表示不用走进实体店铺，选C。
8. 第8题：网购的商品会很方便地被送到我们家中，符合网购送货上门的特点，选D。
9. 第9题：我们不用出门，所以不必担心糟糕的天气或者拥堵的交通，worry about是固定短语，意为担心，选B。
10. 第10题：我们可以使用不同的应用软件和远方的家人朋友交流，apps意为应用程序，符合网络交流的场景，选A。
11. 第11题：我们可以随时分享自己的快乐和悲伤，sadness和happiness对应，选D。
12. 第12题：我们必须小心互联网上可能存在的风险，possible意为可能的，符合语境，选D。
13. 第13题：隐私泄露、网络诈骗这类网络问题对青少年来说很危险，problems指代这类网络不良问题，选A。
14. 第14题：我们有必要用合适的方式使用网络，学会在线保护自己，proper意为恰当的、合适的，选C。
15. 第15题：此处是让步状语从句，意为虽然互联网给我们带来很多好处，我们仍然需要谨慎、负责任地使用它，although引导让步状语从句，选C。