This is a birthday present for you._________
A.What's the problem?
B.Oh, what a surprise!
C.I can't help it!
D.It's a pleasure.
A.What's the problem?
B.Oh, what a surprise!
C.I can't help it!
D.It's a pleasure.
A.Excuse me, my friend sent me a flower
B.Fine, I never go to birthday parties
C.Well, I don’t like birthday parties
D.Sorry, but I had a car accident
A.up to
B.in
C.to
D.off
A.I don’t know for sure
B.You can count on it
C.You can believe him
D.It depends
—Are you certain that today is her birthday?— () Let's get her some flowers.
A.I’m against it
B.I’m positive
C.I can’t make up my mind
D.I’d prefer to go shopping.
a good title for the passage is ()
A、Hemingway's Interest in Writing
B、The Subjects for Hemingway's Writing
C、The Life of Young Hemingway
D、Hemingway's Understanding of War
已知P()=0.3,P(B)=0.4,P()=0.5,求条件概率P()。
设P(A)=0.5,P(B)=0.4,P(A|)=0.6,求P(AB),P(A|AU)。