情景对话 。
根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项，选项中有两个为多余选项。
Pinky: Hello, Ann! This is Pinky. How was your weekend?
Ann: 1
Pinky: Your whole family?
Ann: Yes, all of us. 2
Pinky: I didn't know that was your favorite. It's mine, too.
Ann: 3 , but we started dinner late. My brother Paul's car broke down. He and Jennifer got there after nine.
We were all feeling very hungry by then.
Pinky: I thought his car was a new one. What was the trouble?
Ann: 4 Paul says that new cars are not as good as old ones. He says their steering wheels are not so good.
Pinky: By the way, Ann. Can you do me a favor? My computer doesn't work. Can I use yours for several
days?
Ann: Sorry, Pinky, but I've lent it to Nancy. 5 I'm sure she'll lend you hers.
A. We went to our favorite restaurant, the Golden Crab.
B. Nancy is now busy preparing for the examination next week.
C. Why don't you ask Emily?
D. The food was good as usual.
E. I don't know.
F. Wonderful. We had a family dinner
它是由不饱和烃乙的两个分子在一定条件下自身加成得到，在此反应中除生成甲外，还同时生成另一种产量更高的有机物丙，其最长碳链仍为5个碳原子， 丙是甲的同分异构体。