决定浮力大小的因素是液体的密度和浸入液体的体积．[ ]
√
反密码子UAG识别的mRNA上的密码子是
A．GTC
B．ATC
C．AUC
D．CTA
E．CUA
- ________________
-That's Mary. [ ]
A. What's she like?
B. What does she do?
C. Who's that?
D. How old is she?
