It’s reported that the government has determined to further its education reforms; _____, it will reform middle school education to lessen the burden of students.

A．in all

B．in particular

C．in general

D．in common

如图，某兴趣小组同学做了以下实验。请回答有关问题。

（1）该实验的目的是                           ；

（2）A烧杯中的现象是                           ；

（3）为了使实验结论可靠，该兴趣小组增加了B烧杯，你认为B烧杯的作用是                           。