禁止伪造、倒卖、转借《机动车维修竣工出厂合格证》。（）
参考答案：对
下列计算：（1）an·an=2an；（2）a6+a6=a12；（3）c·c5=c5；（4）3b3·4b4=12b12；（5）（3xy3）2=6x2y6 中正确的个数为[ ]
A.0
B.1
C.2
D.3
_____ is reported that Liu Xiang won a gold medal in the Asian Games in Guangzhou. [ ]
A. It
B. As
C. What
D. Which
