“逃学”在青春挫折综合征中属于( )。
A．
B．
C．
参考答案：C
If you meet your teacher at 7 a. m, what do you say to him or her?[ ]
A. Good morning.
B. Good afternoon.
C. Good evening.
D. Good night.
紫外分光光度法测定注射用硫喷妥钠的具体方法为
A．吸收系数法B．对照品对照法C．标准曲线法D．差示分光法E．解线性方程法
