需在机房操纵电梯，必须先关闭厅门、轿门，切断门机回路后再进行。()
参考答案：对
My little brother _____ his homework in the evening.[ ]
A. doesn't
B. don't
C. don't do
D. doesn't do
“咽喉干燥者，不可发汗”病机是（）
A.阳虚浮越于上
B.胃热上炎
C.肝胆火炎
D.阴虚津液不足
E.以上都不是
