读我国主要工业基地分布图,选择正确说法( )
A.北京所在的工业基地是A
B.广州所在的工业基地是B
C.大连所在的工业基地是D
D.表示沪宁杭工业基地的是C
答案:D
所有成熟T细胞均具有()
A.CD4
B.cD8
C.CD20
D.CD3
E.CD25
Questions 6 to 10 are based on the following news.
A. The instant messaging. B. Credit payment through Barclaycard. C. The mobile wallet. D. Ceil-phone toll paying.