然的"。

　　6．-This teaching method seems good.

　　-True. It can be ________ in a few selected schools to see how it works in practice.

　　A．worked out B．let out

　　C．tried out D．picked out

　　解析：选C　句意："这个教学方法似乎很好。""是的，可以选一些学校试验，看在实践中如何奏效。"work out 意为"解决；算出；实现"；let out 意为"发出；泄露；出租"；try out 意为"试验"；pick out 意为"挑选出"。根据语境可知C项正确。

　　7．(2014·浙江高考)Joe is proud and ________， never admitting he is wrong and always looking for someone else to blame.

　　A．strict B．sympathetic

　　C．stubborn D．sensitive

　　解析：选C　strict"严格的"；sympathetic"富有同情心的"；stubborn"顽固的，固执的"；sensitive"敏感的"。从后半句的句意"(乔)从来不承认自己是错的，总是(把错误)归咎于别人"可知，乔是一个自负而又"固执的"人。

　　8．It was clear that the small grocer was ________ people he owed money to.

　　A．at the expense of B．at the risk of

　　C．in the way of D．at the mercy of

　　解析：选D　句意：显然，这家小杂货铺店主任由他的债主们摆布。at the mercy of "任......处置，对......无能为力"，固定短语，符合语境。at the expense of "以......为代价，靠牺牲......"；at the risk of "冒......的风险"；in the way of "作为......的手段"，都不符合题意。

　　9．-Did you catch ________ sight of a tall TV tower in the distance just now?

　　-Yes, and now it's out of ________ sight.

　　A．/; the B．/；/

　　C．the; the D．a; a

　　解析：选B　句意："刚才你看见远处有一座高高的电视塔了吗？""是的，现在看不见了。 "catch sight of"看见"，out of sight"看不见"，sight 前面均不用冠词。

　　10．They ________ in love with each other for three years, but they have not decided to get married.

　　A．were B．fell

　　C．have been D．have fallen

解析：选C　句意：他们已经相爱三年了，但是他们还没决定结婚。根据题干中的for three years 可知，只能是 have been in love, 故C项正确。注意be in love 和fall in love