17、 things “grow” when heated, what do you think happens to them when they get cold?If you get a chance to check out some railroad tracks, notice the gaps or separations between the rails. (Dont get run over by a train!) Thermal expansion and contraction is why those gaps are placed there that way, and 。

18、 why expansion joints are placed in long highway bridges. Youve probably felt expansion joints on old concrete highways. Remember the “thumpthump” sound as you rode over them?19. How many experiments are mentioned in the passage? A. Two.B. Three.C. Four.D. Five.20. What is Thermal Equilibrium?A. The 。

19、 fact that hot atoms loose some energy to cool atoms when they meet.B. The fact that there are always the gaps or separations between the rails.C. The fact that heat causes things to increase in size.D. The fact that heat is another form of energy. 21. Why is the first paragraph written?A. To explai 。

20、n what heat energy is.B. To sort energy forms for readers.C. To give examples of heat energy. D. To tell readers what to read here. 22. What is the last paragraph mainly about? A. Why thermal expansion is on the tracks and highways.B. How to check railroad tracks and concrete highways.C. Why railroa 。

21、ds and highways are built that way.D. How to remember the “thumpthump” sound.翻译句子23. 这双鞋太小了 ， 没法穿 。
能给我买双新的吗？This pair of shoes _________________________. Can you buy a new pair for me?24. 赢得学生们的心对老师们来说是很重要的 。
________________________________________________ the hearts of students.25. 养成良好的学习习惯是重要的 。
_____ 。

【九年级英语上册|九年级英语上册 Module 4 Home alone单元练习题（无答案）（新版）外研版】22、__________________________________________ good learning habits.26. 李刚帮妈妈做完家务才做作业 。
Li Gang _____________________________________________ the housework.27.这个箱子太重了 ， 我搬不动 。
The box is ____________________I cant carry it.28. 我每天大约花费一小时做作业 。
It__________________________________________ my homework every day.29. 对于老师来说 ，帮助学生学会学习的方法是很重要的 。
_______________________________________________ the methods of study.6 。

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标题：九年级英语上册|九年级英语上册 Module 4 Home alone单元练习题（无答案）（新版）外研版( 二 )