Great women and their achievements教案
24. a. tales b. performances c. news d. stories25. a. viewers b. observers c. astronauts d. pilots26. a. finally b. frequently c. easily d. eventually27. a. more b. much c. farther d. extra28. a. guessed b. predicted c. felt d. promised29. a. equally b. entirely c. extremely d. unnaturally30. a. returned b. recycled c. recreated d. recrossed答案： 21.b.彗星是如何形成的。 22.a. 有助于解釋太陽系的起源。 23.b.彗星在歷史上有很特殊的地位。 24.c. 帶來信息。 25.a. 在夜間給觀星者提供壯觀的景色。 26.b.彗星的尾巴往往達(dá)到…… 27. a. 甚至更長。 28.b.預(yù)測到了1758年彗星的出現(xiàn)。 29.c. 哈雷彗星有兩個(gè)尾巴，極其明亮。 30.a.2. 語法填空閱讀下面短文，按照句子結(jié)構(gòu)的語法性和上下文連貫的要求，在空格處填入一個(gè)適當(dāng)?shù)脑~或使用括號中詞語的正確形式填空，并將答案填寫在答題卡標(biāo)號為31-40的相應(yīng)位置上。字?jǐn)?shù)：175完成時(shí)間：9分鐘難度：**in order to know a foreign language thoroughly, four things are necessary. firstly, we must understand the language when we hear 31 spoken. secondly, we must be able to speak it ourselves correctly with confidence and without hesitation. 32 , we must be able to read the language, and fourthly, we must be able to write it. we must be able to make sentences that are grammatically correct.