子宫内膜增殖期变化发生在月经周期的第()。
A.5~14天
B.15~24天
C.1~4天
D.25~28天
E.10~12天
参考答案:A
—What do you think of the lecture of Li Yang's Crazy English?
—I think it's _________, but someone thinks it's much too ________[ ]
A. wonderful enough ; bore
B. enough wonderful; boring
C. wonderful enough ; boring
D. enough wonderful; bored
单结晶管的用途是()。
A.作放大器
B.作整流器
C.作振荡器