β—月桂烯的结构如图所示:该物质与溴1:1发生加成反应的产物(不考虑顺反异构)理论上最多有
Now that we’ve discussed our problem, are people happy with the decisions _______?
Everybody was touched _____ words after they heard her moving story.
One of the most important questions they had to consider was _____ of public health.
Encourage your children to try new things, but try not to ___ them too hard.
The computer was used in teaching. As a result, not only__________, but students became more interested in the lessons.