烯烃主链碳原子在（）以内的用天干表示。 A.8 B.10 C.12 D.16_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

烯烃主链碳原子在（）以内的用天干表示。

A.8

B.10

C.12

D.16

答案

参考答案：B

完形填空

完形填空。

     Who is your favorite writer? Look! Here is a photo   1   Han Han. He is a young writer in   2   .
Many students like his books, because some of them are about   3   life. Han Han is   4   Shanghai.
He's twenty-eight years old. He can   5   Chinese and English. Han Han likes running,   6   football
and computer games. He often   7   on his blog(博客). Students can read his articles(文章)on   8  .
Han Han has a yellow dog. It likes to   9   with him. Do you know what Han Han's favorite   10   is?
It's the watermelon.

( )1. A. on
( )2. A. America
( )3. A. student
( )4. A. in
( )5. A. speak
( )6. A. play
( )7. A. listens
( )8. A. them
( )9. A. read
( )10.A. food

B. from
B. Chinese
B. students
B. on
B. say
B. to play
B. speaks
B. it
B. write
B. vegetables

C. of
C. China
C. student's
C. of
C. show
C. playing
C. writes
C. they
C. run around
C. fruit

D. in
D. English
D. students'
D. from
D. find
D. is playing
D. spells
D. him
D. look at
D. dessert

单项选择题

有关航海日志的记载要求下列哪项正确？（）I、发生海事后应周密斟酌，实事求是地记载；II、发生异常事件时，船长应亲自主持更换新本，重新记载并签署；III、应使用不褪色的蓝色或黑色墨水毛记载；IV、大副负责具体管理航海日志

A.I~IV

B.I~III

C.II~IV

D.I、III