达菲是治疗甲型H1N1流感的有效药物之一。合成达菲的原料是莽草酸_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

达菲是治疗甲型H1N1流感的有效药物之一。合成达菲的原料是莽草酸，已知莽草酸和达菲的结构简式如下图所示，则有关说法中不正确的是

A．1 mol莽草酸与足量金属钠反应最多可生成2 mol氢气

B．达菲既可催化加氢，又可使酸性KMnO₄溶液褪色

C．达菲既可发生水解反应，又可与Br₂的CCl₄溶液发生加成反应

D．莽草酸既可与FeCl₃溶液发生显色反应，又可与NaHCO₃溶液反应放出CO₂

答案

答案：D

填空题

选出正确的单词或词组填空。

1. Mittens and __________ (mitt, mitts) are the same.

2. There are many __________ (peoples, people) at the restaurant.

3. He is a good __________ (sing, singer)

4. The TV is too loud. Please turn __________ (on, down) the TV.

5. It's cold. He is __________ (taking off, putting on) his coat.

6. I can play __________ (the piano, the football).

7. I think the girl is the __________ (good, best).

8. There are four __________ (season, seasons) in a year.

9. I like to sit __________ (under, in) the sun.

10. It's cold, Let's go __________ (outside, inside).

判断题

需雨天巡视室外高压设备时,应穿绝缘靴，并不得靠近避雷器和避雷针。