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1.Baleen whales swim with their mouths open and obtain food by filtering the crustaceans and the smallest fishes from the water.
(A) frightening (B) discarding (C) straining
2.The Mayan civilization flourished on the Yucatan peninsula of Mexico.
(A) profited (B) gained (C) prospered
3.A piece of wood is floating in the water.
(A) drifting along (B) condensing (C) bunching together
4.Because of their chemical structure, synthetic dyes generally fade more slowly than natural ones.
(A) penetrate (B)lose color (C) darken fabric
答案CCAB
详解
straining
n. 应变，变形
v. 拉紧;竭尽…的全力;使…损坏(strain的ing形式)
With straining eagerness Catherine gazed towards the entrance of her chamber.
凯瑟琳带着紧张的热切神情，盯着她卧房的门口。
prospered
vi. 繁荣，昌盛;成功
vt. 使……成功;使……昌盛;使……繁荣
As the World Bank puts it, the region, which prospered through exporting, is now suffering for the same reason.
正如世界银行所言，这一地区的繁荣源自出口，但如今的痛苦也出于同样原因。
drifting along
随波逐流;任其自然
Some people have aims in their lives, some are just drifting along.
有些人生活中有一定的目标，有些则听其自然。
lose color
变苍白
To prevent lose color , but preexistence corrupt mark is in an a few drop clear water, will wipe gently again after its embellish is wet.
为防止掉色，可先在污痕处滴几滴清水，将它润湿后再轻轻擦拭。
