太渊穴是（）
A.经穴
B.八会穴中的气会
C.络穴
D.荥穴
E.输穴
参考答案：E
24. The boy the teachers considered _____ was caught ______ in the exam, which surprised us very much.
A．to be the best, cheating
B．as the best student, to cheat
C．being the best, cheating
D．as a good student, to cheat
示波器面板上的“辉度”是调节（）的电位器旋钮。
A.控制栅极负电压
B.控制栅极正电压
C.阴极负电压
D.阴极正电压
