北师大版高中英语选修七Unit21SectionⅠ语言点二应用落实

高中英语学习材料
（灿若寒星*制作整理）
Ⅰ.选词填空
in vain，at random，at all costs，in use，due to，come across
1．My bike bought 10 years ago is still in_use.
2．The parents are determined to support their daughter's college education at_all_costs.
3．They chose some people at_random in the street to give the questionnaires.
4．Tidying up the room, she came_across some old photographs in a drawer.
5．The team's success was largely due_to Mary's efforts.
6．I spent three days putting up a cottage but a storm made it in_vain.
Ⅱ.单项填空
1．His efforts to raise money for his program were ________ because no one showed any intention to take a cent out of their pockets.
A．in place B．in sight
C．in effect D．in vain
解析：选D。

考查in vain的用法。

in place“在适当的位置，准备就绪”；in sight“在视线内”；in effect“生效，起作用”；in vain“徒劳”。

根据句意“他为他的项目筹集资金的努力付诸东流了，因为没有一个人愿意从腰包里掏出一分钱。

”可知应选D。

2．Chinese government prevented Swine Flu from spreading ________.
A．at a cost B．at the cost
C．at all costs D．at cost
解析：选C。

句意：中国政府将不惜一切代价阻止猪流感蔓延。

at all costs“不惜一切代价，无论如何”。

3．When he got home, he just placed his film ticket ________. Now he doesn't know where to find it.
A．at random B．in vain
C．on occasion D．by chance
解析：选A。

考查词组辨析。

at random“随便地，随意”；in vain“徒劳，白费力气”；on occasion“偶尔，偶然”；by chance“偶然”。

根据句意“当他到家时，他只是随便把电影票放了起来。

现在，他找不到票了。

”可知应选A。