共同γ链(γc)不是以下哪种细胞因子的受体()
A.IL-2
B.IL-7
C.IL-9
D.IFN-y
E.IL-4
参考答案:D
(3×10-5)2÷(3×10-1)-2=______(结果写成科学记数法的形式).
The new movie______ to be one of the biggest money-makers of all time.
A.promises
B.agrees
C.pretends
D.declines