41. What does the passage mainly tell us about?
A. How to predict earthquakes.
B. What to do during an earthquake.
C. The damage an earthquake can cause.
D. The factors that cause an earthquake.
40. writing 练习做某事应用practise doing sth。
39. who 引导定语从句,先行词是those。
38. advice 一条建议,此处应用名词。
37. If 前后是条件关系。
36. their 指代前面的words。
35. to memorize 不定式作真正主语。
34. A 好的记忆力有助于学习,memory为可数名词。
33. in 在语言学习方面没有容易取得成功的办法。