29. _________ is not how much you do but what you do that matters.
A. This B. It C. That D. There
28. The word “cool” has expanded to _________ many different meanings.
A. take on B. put on C. carry on D. get on
27. Generally speaking, _________ main material for building houses has been concrete, but _________ wood and stone have also been used.
A. the; / B. /; / C. the; the D. /; the
26. – I lost the game today.
– Well, _________ luck next time.
A. well B.
good C.
better
D.
best
25. I want to improve my English. Don’t __ to correct me if I make a mistake.
A. mind B. hesitate C. desire D. seek
24. – Has any of you seen the film, Amazing Tales: Three Guns?
– _________.
A. No one B. Not C. None D. Not any
23. _________ the illegal mobile WAP sites worries many parents.
A. The children’s s
urfing
B.
The children surf
C. The children surfing D. The children have surfed
22. He is so happy ____ his father has promised to buy him an MP5 player.
A. that B. while C. which D. because
第一节:语法和词汇知识(共15小题,每小题1分,满分15分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21. – What’s the matter? You really look down.
– _________.
A. Why, I always look up to you
B. Me? I never look down upon anybody
C. I am looking for my pen on the floor D. I failed an important test
29.(14分)碱存在下,卤代烃与醇反应生成醚(R-O-R′)
R-X + R′OH
R-O-R′ + HX
化合物A经下列四步反应得到常用溶剂四氢呋喃,反应框图如下:
![]()
请回答下列问题:
(1)A物质中所含官能团的名称_________________________;
(2)写出①、③步反应类型分别为①____________、③____________;
(3)写出下列反应的化学方程式:
(I)A与乙酸反应________________________________________,
(II)A的一种同分异构体发生银镜反应_________________________________;
(4)写出四氢呋喃链状醚类的所有同分异构体的结构简式_____________________。
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com