八会穴中的骨会是
A．中脘B．阳陵泉C．大杼D．悬钟
参考答案：C
I______ thank you too much for all your help to my son while we were away from home. [ ]
A. won’t
B. can’t
C. can
D. will
学生用品可迁移元素的测定，提取过程应在（）温度下进行。
A.15±2℃
B.23±2℃
C.37±2℃
D.50±2℃
