艾滋病是由下列哪种病毒引起的？（）
A.先天性免疫缺陷病毒；
B.获得性免疫缺陷病毒；
C.人类免疫缺陷病毒；
D.动物免疫缺陷病毒。
参考答案：C
I’m blessed______ a happy childhood, ______ most people would like to have.
A．to; that
B．with; as
C．to; which
D．with; one that
Don't just believe the ad. This kind of camera is __________ it says.[ ]
A. as good as
B. not as well as
C. as well as
D. not as good as
