30. ---__________you got to know so much about the pop group in America?

---Through the Internet.

A．How was it

B．What was it

C．How was it that

D．What was it that

洗发后发丝缠绕的原因，首先是洗发前没有（），其次是洗后没有使用润丝露。

A.梳理

B.修剪

C.按摩

D.抖发