Th0细胞在下列哪种细胞因子微环境中分化为Th1细胞（）
A.IL-10
B.IL-5
C.IL-3
D.IL-12
E.TNF-α
参考答案：D
There was a traffic jam; otherwise I ____ here on time.
A．would be
B．had been
C．should be
D．would have been
If you want to send your recording ___ email, connect the recorder ___ your computer. [ ]
A. by; with
B. from; to
C. by; to
D. in; with
