问题
选择题
-What a qualified husband he is!
-Definitely. Lots of people are touched by his ________ to his wife who has weak eyesight.[ ]
A．devotion
B．deed
C．satisfaction
D．service
答案
答案：A
搜题请搜索小程序“爱下问搜题”
-What a qualified husband he is!
-Definitely. Lots of people are touched by his ________ to his wife who has weak eyesight.[ ]
A．devotion
B．deed
C．satisfaction
D．service
答案：A
在一密闭容器里放入甲、乙、丙、丁四种物质各若干克，使其在一定条件下充分反应后测得数据如下表，则下列表述正确的是
（ ）
| 四种物质 | 甲 | 乙 | 丙 | 丁 |
| 反应前质量（g） | 10 | 10 | 5 | 5 |
| 反应后质量（g） | 16 | 未测 | 4 | 0 |
A．甲可能是反应物
B．乙可能是催化剂
C．该反应可能是置换反应
D．该反应中，丙与丁的质量比为1：1