欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

19、________ melamine（三聚氰胺）to milk makes the protein level appear higher, which brings a quick profit to some greedy companies.

A. Added                   B. Having added           C. Being added             D. Adding

18、Do we think we’re slow to adapt to change ________ we’re not smart enough to cope with a new challenge?

A. or                    B. and                          C. or that                    D. or but

17、Why don’t you call directory enquiries and ask them? It ________ a new number if it’s not in the book.

A. can be               B. could be                   C. must have been              D. must be

16、The new secretary works very well indeed, but surely not ________ Jennifer, the former secretary of the company.

A. so efficiently as                                             B. as efficient as

C. more efficient than                                         D. much efficiently than

15、Do you realize that I ________ some very important people to dine with me tonight? Your mistake could cost me an important contract.

A. invited               B. have invited              C. had invited                D. have been invited

14、 We are very impressed by your fluent English. I suppose your parents must speak very    good English as well.

Thank you. But ________ of them knows a single word of the language. I learned it all by myself.

A. either                          B. both                        C. neither                     D. none

13、Those who are potential customers will certainly be reassured to learn that a case covered in rubies and diamonds is included free ________ charge.

A. from                 B. to                     C. in                     D. of

12、在昨天的會議上，他沒有提到他們是否將采取措施來解決空氣污染問題。(mention, take measures)

二、選擇題

（每空？ 分，共？ 分）

11、我們從不懷疑我們現(xiàn)在學習得越多，將來就能為國家工作得越好。(doubt, the more…, the more… )

10、電視和網(wǎng)絡(luò)能使我們很好地了解世界各地正在發(fā)生的事情。(inform)