问题 单项选择题

胰岛素原与胰岛素比较是()

A.分子量比胰岛素小的单链多肽

B.分子量比胰岛素大的两条多肽链

C.分子量比胰岛素大的单链多肽

D.分子量比胰岛素小的两条形肽链

E.16个氨基酸组成的信号肽

答案

参考答案:C

单项选择题 B型题
完形填空

People always say that the earlier one learns a language, the ___1___ it is to do so, in theory it is that, ___2___, in my opinion, that refers to spoken language. Capability(能力) to practise some essential(基本的) ___3___ of a language and read between the lines can only be trained through proper reading ways and hard work ___4___. So spending money to help ___5___ learn English may ___6___ with disappointment. It is likely that the more you ___7___, the more you are let down.

The daughter of one of my friends ___8___ English in primary school, ___9___ her foreign teacher’s blindness ___10___ psychology(心理学). She did not want to go on ___11___ English until middle school, ___12___ a college student studying in English slowly ___13___ her interest in the language.

It is better to have the child learn Chinese, than to have some difficulty ___14___ learning English for several years. Having been engaged in English education, ___15___ find that despite(不管) their excellent ___16___, many students have ___17___ command(掌握) of English words and phrases. So I suggest that children ___18___ classical Chinese prose(散文), rather than ___19___ them to learn English hurriedly. Otherwise, they may ___20___ the best time to improve the language ability of their mother tongue.

1.A.easy  B. difficult     C. easier  D. more difficult

2.A.but   B. however     C. though       D. yet

3. A. opinions B. regards       C. requests      D. expressions

4.A.directly    B. orally  C. properly     D. indirectly

5.A.people      B. girls    C. children     D. boys

6.A.begin       B. start    C. finish  D. end

7.A.pay   B. get      C. buy     D. take

8.A.loved       B. liked   C. disliked      D. learned

9.A.because of       B. because      C. instead of   D. instead

10.A.of   B. at       C. in       D. to

11.A.learning  B. to learn      C. with learning     D. for learning

12.A.while     B. where C. when  D. as

13.A.introduced     B. practised    C. explained   D. developed

14.A.in   B. to       C. at       D. of

15.A.He  B.I   C. She     D. They

16.A.pronunciation B. phrase C. language    D. writing

17.A.few B. less     C. little   D. fewer

18.A.write      B. do      C. remember   D. memorize

19.A.have       B. let      C. cause  D. make

20.A.get back B. let go  C. bring in      D. go away