1.One way to preserve species ______ the threat of extinction is to remove them to zoos and parks.

　　A.in

　　B.on

　　C.under

　　D.with

　　[解析]考点是固定搭配under the threat of 在….的威胁下。

　　2.Although she didn't mention any names, everyone knew who she was ______ to.

　　A.meant

　　B.regarding

　　C.investigation

　　D.referring

　　[解析]词组refer to 指的是…. ;mean to 企图 ;regard 认为; investigation 调查

　　3.I was surprised to find that the computer could ______ a vast number of different tasks.　A.perform

　　B.create

　　C.display

　　D.explain

　　[解析]perform做，完成，屡行perform tasks 完成任务; create 创造;display 显示，展示; explain解释。

　　4.The computer has brought about surprising technological changes ______ we organize and produce information.

　　A.in a way

　　B.in the way

　　C.in that way

　　D.in no way

　　[解析]in the way 在….方面;in a way 从某种意义上说，在某种程度上;in that way 以那种方式;in no way决不， 一点也不。

　　5.The French pianist who had been praised very highly ______ to be a great disappointment.

　　A.turned up

　　B.turned out

　　C.turned in

　　D.turned down

　　[解析]turn out 结果证明是，结果是。 turn up 出现;turn in 上交;出卖;turn down 拒绝。这句话的意思是：那个曾经受到很高评价的法国钢琴家结果却令人大失所望。

　　6.It was difficult to guess what her ______ to the news would be.　A.impression

　　B.reaction

　　C.comment

　　D.opinion

　　[解析]本题是词汇辨析题，reaction反应(后接介词to ,意思是“对….的反应”，这句话的意思是：难说她对这个消息会有怎样的反应。impression 印象(后接of,about或on , 意义为“对….的印象”;comment 评论(后接介词on , upon 或about);opinion 评价(后接介词of,about或on)