导读：2016考研在于每天坚持的努力，每天坚持一点，就能取得不错的收获!文都网校分享《考研英语每日一练》。

　　One more reason not to lose sleep over the rise in oil prices is that,unlike the rises in the 1970s,it has not occurred against the background of general commodity-price inflation and global excess demand. ////This ,for those as yet unware of such a disadvantage ,refers to discrimination against those whosesurnames begin with a letter in the lower half of the alphabet.句一中这是against的一个用法，是介词，以...为背景，后接background或直接加事实，比如against a backdrop of falling metal prices.在金属价格下跌的背景下，直接翻译出来...的背景就可以。 句二中against是与discriminate搭配的，歧视的对象。 It is unjust to discriminate against people of other races.歧视外族人是不公正的.

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