机动车仪表板上（如图所示）亮表示启用地板及前风窗玻璃吹风。
参考答案：对
诊断子宫性闭经的依据是（）。
A．注射黄体酮有撤退性出血
B．注射黄体酮无撤退性出血
C．雌-孕激素无撤退性出血
D．雌-孕激素有撤退性出血
E．雌激素有撤退性出血
—I don't know how to deal with these old books.
—_____ giving them to the children from poor families?[ ]
A. What about
B. Why don't you
C. Shall we
D. Why not
