植物对养分的吸收具有（）。 A.普遍性 B.选择性 C.主动性 D.被动性

词汇运用。

用括号内所给词的适当形式填空。

1. The girl _______ red to blue when she was 5 years old. (prefer)

2. Who will be the new chairperson of the ________ (student) Union.

3. It is well-known that one fifths is eight ________. (four)

4. What you said has made her feel even ________. You must say sorry to her! (sad)

5. People all dress __________ (they) in the best clothes when the Spring Festival comes.

6. When seeing the man yesterday, Simon just forgot when _______ him before. (meet)

7. He often has meals ________ (regular). He is in poor health.

8. — Hi, Lily. I didn't see you at the party.

    — Oh, I ________ for the history exam. (prepare)

9. I won't go to the party if I ________ (not invite).

10. It's said that Steven _________ many places of interest since he came to China. (visit)

该患儿最可能的诊断是

A．房间隔缺损
B．室间隔缺损
C．动脉导管未闭
D．法洛四联症
E．肺动脉狭窄

热轧一般在（）状态下进行。

某二级收尘系统，一级收尘效率为80%，二级收尘率为99%，则收尘系统总效率为（）

A、99%

B、98.2%

C、99.8%

对于甲状腺腺瘤与结节性甲状腺肿来说，下列哪几项描述不正确

A．甲状腺腺瘤多为单个结节

B．结节性甲状腺肿常为多个结节

C．结节性甲状腺肿可合并腺瘤或腺瘤样变

D．甲状腺腺瘤常为多个结节

E．结节性甲状腺肿不可能为单个结节