目前,虚拟市场主要由()方面构成。
A.B2C
B.B2B
C.C2C
D.B2G
E.G2B
参考答案:A, B, C, D, E
根据提示,将下列句子排成一组对话。
A: Yes, I can.
B: Do you want to join the art club?
C: Can you paint?
D: What club do you want to join?
E: Can you swim?
F: No, I can't.
G: Yes, I do.
H: I don't know.
1. D 2.____ 3. E 4.____ 5. B 6.____ 7.____ 8.____
_______试验有助于快速鉴别革兰阳性和阴性细菌败血症。