【单选题】U2P2- What help will Jolie’s decision bring to women?
A.
It will help women take preventive measures if with defective gene.
B.
It will help women be brave enough to take double mastectomy.
C.
It will help women choose breast reconstruction.
D.
It will save countless women’s lives.
【单选题】help with the housework
【简答题】设 是有界闭集,d(E)为E的直径.证明:存在P 1 ,P 2 ∈E,使得ρ(P 1 ,P 2 )=d(E).
【简答题】若事件E与F相互独立,且P(E)=P(F)= 1 4 ,则P(E∩F)的值等于______.
【单选题】Today the goal of P. E. classes is to______.
A.
help all the students exercise
B.
create competition among students
D.
avoid competitive sports