妇女更年期的分期()
A.绝经前期
B.绝经期
C.绝经后期
D.老年期
E.闭经期
参考答案:A, B, C
It is pretty well understood ________ controls the flow of carbon dioxide in and out the atmosphere today.
A.that
B.when
C.what
D.how
“三下五除二”是使用哪种工具的口诀之一?