“cosx+isinx”的结果为:()。
A、ex
B、eix
C、iex
D、exi
参考答案:B
He told the boys________________.
A.made so much noise
B.not to make so much noise
C.not to made so much noise
D.not make so much noise
受孕初期仍按月行少量月经而无损于胎儿者称:
A.居经B.激经C.暗经D.暗产E.避年