下列作物中，不属于明朝从国外引进的是 A．占城稻 B．玉米_爱下问搜题

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问题

下列作物中，不属于明朝从国外引进的是

A．占城稻

B．玉米

C．甘薯

D．向日葵

答案

答案：A

不属于明朝从国外引进的是占城稻。占城稻是出产于印支半岛的高产、早熟、耐旱的稻种，宋朝时引入我国。故本题选A。

完形填空

完形填空。

     Mike is a student.   1   likes jogging (慢跑) every morning, and he   2   swimming every afternoon. He   3
many ball games. He   4   soccer, volleyball and tennis. He is very   5   at soccer, and he   6   on the school team.
After school, he likes   7   tennis with his   8 , Peter.   9 likes sports best,  10  he also does very well in his
studies.

( )1. A.Her
( )2. A.likes
( )3. A.play
( )4. A.likes
( )5. A.nice
( )6. A.works
( )7. A.taking
( )8. A.friend
( )9. A.Peter and Mike
( )10. A.but

B. She
B. plays
B. watches
B. is
B. happy
B. plays
B. playing
B. teacher
B. Peter’s
B. and

C. He
C. does
C. thanks
C. does
C. good
C. takes
C. doing
C. father
C. Peter
C. so

单项选择题

生物活性最大的甲状腺激素是

A．一碘酪氨酸
B．三碘甲腺原氨酸
C．甲状腺素
D．逆三碘甲腺原氨酸