围绝经期要做好如下哪些保健（） A.保持乐观情绪 B.多做运动，增加日晒时间，起居有

—When are you going to fly to Taiwan this summer?

—________ we finish school. It will be a great holiday. [ ]

A. Because

B. Since

C. Until

D. As soon as

—Would you please tell me _____ next?

—Think it over. You'll find a good way. [ ]

A. when to do

B. how to do

C. what to do

D. where to do

与元素的化学性质关系最密切的是原子的

A．核外电子数

B．最外层电子数

C．相对原子质量

D．核内质子数

倒换散1功效与作用

贵重中药临床用量一般是（）

A.0.03～0.6g

B.0.3～1g

C.1～3g

D.3～6g

E.6～9g