蝙蝠晚上捉蚊子不靠眼睛,靠什么()
A、超声波
B、电磁波
C、脑电波
参考答案:A
Do you like the book _______ is yellwo?
A.whose cover
B.which cover
C.cover whose
D.cover which
在PPoint91中,演示文稿缺省的文件扩展名为.PPT。