乳腺癌时升高明显的是（）

A.CA125

B.CA199

C.CA15-3

D.NSE

E.PSA

用括号内所给词的适当形式填空（每空不限一词）。

小题1:If you ___________(not be) careful enough in the exam, you will not get a good grade.

小题2:Our modern times need more and more ___________ (hero) for us to learn from.

小题3:Good habits are good for the ___________ (develop) of us teenagers.

小题4:The 30^th Olympic Games ___________ (hold) in London this summer.

小题5:— Look! He is shouting at his mother.

— Why is he so ___________ (polite)?

小题6:The group of students are discussing the question ___________ (active) to come up with the answer.

小题7:The Three-D film Titanic is the ___________ (wonderful) film I have ever seen.

小题8:The OBIS doctor is training the local doctors how___________ (deal) with the blindness.

小题9:Though my grandfather is in his ___________ (seventy), he has got a QQ number.

小题10:Lei Feng devoted himself to___________ (work) for the people all his life.