1．在愈伤组织再分化的过程中，下列说法正确的是

A．先诱导生根，细胞分裂素与生长素的浓度比高

B．先诱导生根，细胞分裂素与生长素的浓度比低

C．先诱导生芽，细胞分裂素与生长素的浓度比高

D．先诱导生芽，细胞分裂素与生长素的浓度比低

49. what　 　　 50. waken　 51. neighbor　 　　　 52. loudly　 53. write

[书面表达]

One possible version:

Dear Mike,

I’m very glad to receive your e-mail.

As you said, Super Voice Girls are really very popular these days and the champion Li Yuchun has appeared on the cover of Times magazine. Some people think Super Voice Girls are popular because common people are allowed space to voice / express their own opinions. Besides, they have broken the traditional value of beauty.

But I think it is wrong of young people to admire Super Voice Girls too much, because they may mislead young people. We should have real heroes to learn from and work hard for the future of our country.

What do you think?

Best wishes.

Li Hua

44. upset　 　 45. about　 　 46. mistake　 　　　 47. forgot　 　 48. never　

43．B。由文章第一段可知答案。

[对话填空]

40．C。依据全文，正确顺序为C项。

39．B。选项A、C很容易被排除。这篇文章并没有报道一个新闻事件，所以D项被排除，故选B项。

38．D。从第三段最后-句可知，这个岛屿是编造出来的．所以选D项。

37．D。最后一段倒数第二句可知D项正确。A是技术专家，D是喜剧演员，C是美国前总统。