以明胶为囊材用单凝聚法制备微囊时，常用的固化剂是
A．硫酸钠
B．甲醛
C．乙醇
D．丙酮
E．氯化钠
参考答案：B
“你上的哪所学校？”英文表示为：“（）school did you go to？”
A、What
B、This
C、That
D、Which
I thought the plan he____at the meeting____. [ ]
A. put on;makes no sense
B. put forward; made no sense
C. put off;didn't make any sense
D. put forward;doesn't make ariy sense
