丙二酰脲类的化学反应中属配位反应的是：A．与银盐、铜盐的反应_爱下问搜题

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问题单项选择题

丙二酰脲类的化学反应中属配位反应的是：

A．与银盐、铜盐的反应

B．碱性中的异构化

C．巴比妥类钠盐溶液加酸生成沉淀的反应

D．硫喷妥钠与铅盐的反应

E．取代物的亚硝酸-硫酸试剂的显色反应

答案

参考答案：A

完形填空

完形填空。

Hello! I'm Li Xiang. I want to introduce my school to 1 . Our school is very 2 . There are about 1,900 3 and 100
teachers. When you 4 the school gate (大门), you can see a tall building 5 you. Our classrooms and the teachers'
6 are in the building. There is a 7 behind the building, 8 we can borrow (借) books from it. Next to 9 , there is a gym.
We can 10 basketball, football and tennis. Is there a dining hall in our school? I will tell you next time. Bye!

( )1. A. me
( )2. A. big
( )3. A. teachers
( )4. A. stand up
( )5. A. next
( )6. A. universities
( )7. A. library
( )8. A. but
( )9. A. there
( )10.A. play

B. them
B. long
B. offices
B. come into
B. behind
B. hotels
B. gym
B. too
B. here
B. meet

C. you
C. happy
C. classrooms
C. sit down
C. in front of
C. homes
C. lab
C. and
C. one
C. match

D. us
D. tall
D. students
D. open
D. in the front of
D. offices
D. dining hall
D. or
D. it
D. playing

名词解释

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