--Is the book Dream of the Red Chamber well worth _____?

---Yes, I think so, but I can’t make _____of it completely.

A．being reading; sense

B．reading ;significance

C．being read; difference

D．reading; sense

正常成年男性红细胞的正常值是

A．500X10的1次方／L

B．500X10的4次方／ml

C．5．0X10的7次方／L

D．5．0X10的9次方／L

E．5．0X10的12次方／L