设X~N(0,1),Y~N(1,2),且X,Y相互独立,而Z=2X+Y-1,则Z服从________
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—Nice to meet you.— _____.
A. Good morning
B. Happy to see you
C. Nice to meet you, too
D. Pleased to see you
- Thank you very much for helping me. - _____.
A. You are welcome
B. It doesn’t matter
C. No need
Don’t say that
My elder brother is _____, because he goes jogging every morning.
A. lazy
B. happy
C. energetic
D. strict
I am so happy that my grandparents live in the same _____. We can look after each other.
A. manager
B. community
C. gift
D. company