9.She looks very young,________she is already in her 30's.

　　她看上去很年轻，可是她已三十多岁了。

　　10.I like tea ________ she likes coffee.

　　我喜欢喝茶，而她喜欢喝咖啡。

　　.汉译英

　　1.答案：From the valley came a frightening sound.

　　2.答案：Make sure that the door is locked when you leave.

　　3.答案：Netherlands is among the richest countries in the world.

　　4.答案：This university hasn't as long a history as Beijing University.

　　5.答案：Although the weather is not fine，we have had a high harvest this year.

　　.语法专练

　　1.解析：此题考查"祈使句+and+结果分句"。

　　答案：C

　　2.解析：one more step相当于一个表示条件的"祈使句"。and表示"因果关系"。

　　答案：C

　　3.解析：even though引导让步状语从句，表示"即使"。

　　答案：C

　　4.解析：while表示"对比"。

　　答案：C

　　5.解析：并列连词so在此句中表示"因果"关系。句意为：这家商店直到上午11点才开门，所以失去了许多生意。

　　答案：D

　　6.答案：However

　　7.答案：While

　　8.答案：but

9.答案：but