广告文案一般由（）组成。
A.广告正文
B.广告随文
C.广告标题
D.广告语
参考答案：A, B, C, D
依据物质的性质特点，判断下列物质属于链状结构的是（ ）
A．有机玻璃
B．电木
C．大棚薄膜塑料
D．锅把的隔热塑料外壳
-Have you ever seen Peter recently?
--Yes. He__________ me to ask you how you___________ along with your new job these days.
A．has asked;have been getting
B．asked ;were getting
C．often asks;are getting
D．asked;are getting
