683] What _____ to Joan last night? What did she cry for?

[譯文] 昨天晚上Joan發(fā)生了什么事？　她為什么哭呀？

　 A. was happened 　 B. happened

　 C. was happening 　 D. had happened

[答案及簡(jiǎn)析] B。 昨天晚上發(fā)生了什么事，一般用過去時(shí)態(tài)；happen不能用被動(dòng)語氣。

682] _____ is the population of your country?

[譯文] 你們國家的人口是多少？

　 A. How 　 B. what

　 C. How many 　 D. How many

[答案及簡(jiǎn)析] B。 就名詞population提問"多少"時(shí)，可用what或how large。

681] Please say "Hi" to Bob ______ me.

[譯文] 請(qǐng)你代我向Bob問好。

　 A. to 　 B. for

　 C. about 　 D. from

[答案及簡(jiǎn)析] B。 請(qǐng)你代我向某人問好應(yīng)用say Hi to sb. for me。

680] After we walked ______ the forest, and ______ a river, we arrived at that small village.

[譯文] 我們穿過森林，趟郭河流，來到了一個(gè)小村莊。

　 A. across; across 　 B. through; across

　 C. across; through 　 D. through; through

[答案及簡(jiǎn)析] B。 穿過兩邊有高度的地方用介詞through；穿過廣闊的海洋，沙漠，平原用across。

679] We were about to leave the classroom _____ it began to rain.

[譯文] 我們正要離開教室，這時(shí)下起雨來了。

　 A. while 　 B. when

　 C. as 　 D. before

[答案及簡(jiǎn)析] B。 be about to do sth. when "…正要干某事，這時(shí)…"。

678] Three students in ten will go and _____ to stay in the classroom.

[譯文] 百分之三十的學(xué)生要去，剩下的將留在教室里。

　 A. the rest are 　 B. the rest is

　 C. the other are 　 D. the other is

[答案及簡(jiǎn)析] A。 rest 可以代替可數(shù)名詞也可以代替不可數(shù)名詞，謂語用單數(shù)還是用復(fù)數(shù)就看它代替的是什么名詞了。

677] The beef is too expensive. I won’t buy it _____.

[譯文] 牛肉太貴，那個(gè)價(jià)格我不會(huì)買的。

　 A. at that price 　 B. at a that price

　 C. on that price 　 D. in that price

[答案及簡(jiǎn)析] A。 以…價(jià)格或速度用介詞at。

676] The medicine _____ natural plants.

[譯文] 這種藥由天然植物制成的。

　 A. is made of 　 B. is made from

　 C. is made in 　 D. is made into

[答案及簡(jiǎn)析] B。 制成成品看不出原材料應(yīng)該用be made from。

675] ----- I’m going to the States. ----- How long ______ you ______ in the States?

[譯文] --我打算去美國�！　�--你準(zhǔn)備在美國呆多久？

　 A. are; stayed 　 B. are; staying

　 C. have; stayed 　 D. did; stay

[答案及簡(jiǎn)析] B。 現(xiàn)在進(jìn)行時(shí)態(tài)表示將來。

674] I don’t think _____ possible to master a foreign language without much memory work.

[譯文] 我以為不做記憶類工作是不可能掌握一門外語的。

　 A. this 　 B. that

　 C. its 　 D. it

[答案及簡(jiǎn)析] D。 6123結(jié)構(gòu)。