Unit 4 The Earth 周测（一） 一、根据首字母或括号中的单词提示，用单词的正确形式完成句子。 1. The Earth is the only p_____ we know that has life on it. 2. Cities often have different a_____ for shopping, living and working. 3. Three g_____ of my family sat around the table, sharing interesting things. 4. The height of this tree is about ten m_____. 5. As far as we know, disposable plastic bags are _____ (有害的) to our environment. 6. The movie is _____ (惊奇的). I can't stop watching. 7. The Sun _____ (提供) light and warmth for the Earth, making it possible for plants to grow. 8. _____ (鲸) are huge mammals that live in the ocean. 9. Look! The sky is _____ (覆盖) by dark clouds, meaning a storm is coming. 10. The water in the river often _____ (到达) the top of the bank after the heavy rain. 二、单项选择。 ( )11. _____ people around the world use the Internet every day. A. Eight billions B. Billions of C. Eight billions of D. Billion of ( )12. They made me _____ for an hour yesterday. A. to wait B. wait C. waiting D. waited ( )13. It was raining heavily when we _____ the hotel. A. reached B. arrived C. arrived in D. got ( )14. The new game is as _____ as the last one we played. A. more exciting B. excited C. exciting D. Excitedly ( )15. The government plans to _____ all students _____ free textbooks next year. A. provide; for B. provide; with C. provide; as D. provide; of 三、完形填空。 Living in a house made of fungi (真菌) might sound like a story from a movie, but scien tists are working to make it 16! Usually, people use cement (水泥) to build houses. However, this material 17 the environment. It puts a lot of carbon dioxide (二氧化碳) into the air, which makes the Earth 18. A group of US scientists wanted to find a greener way to build. They turned to 19: fungi. Fungi grow through thin threads called mycelia (菌丝体), which spread underground to find food. The mycelium is usually 20, but the scientists had an idea. They 21 spe cial bacteria (细菌) to it. These bacteria produce the same material that makes eggshells hard. As it 22, the mycelium becomes strong and solid. Right now, this new material can stay 23 for at least a month. Scientists are 24 working to make it last longer—long enough for real houses. If they succeed, we might one day live in small houses built from hard fungi, helping both the 25 and our homes! ( )16. A. clean B. fun C. real D. big ( )17. A. harms B. helps C. uses D. finds ( )18. A. colder B. warmer C. wetter D. drier ( )19. A. science B. nature C. art D. school ( )20. A. short B. hard C. long D. soft ( )21. A. gave B. took C. added D. sold ( )22. A. builds up B. cuts down C. looks up D. grows big ( )23. A. strong B. light C. healthy D. soft ( )24. A. never B. still C. once D. soon ( )25. A. animals B. movie C. planet D. bacteria 答案： 一、 ... ...
~~ 您好，已阅读到文档的结尾了 ~~
