化学与生产、生活、社会密切相关．下列有关说法中不正确的是（　　）

农村常可见到这样的现象，一些年届七旬的老翁，要向三岁稚童称“叔”或“伯”。永定俗谓：“白头哥，坐地叔”（即对平辈的白头老翁仅呼“哥”，而尚在襁褓中的叔辈，即使上年纪老者也要唤其为叔）。这一现象反映了宗法制

____ cups   

根据对话内容，从方框内选出能填入空白处的最佳选项，其中有两项为多余选项。

A: Jim, you said you would not stay out late after school, didn't you?

B: Yes, mom, I did.

A: But it's 10 o'clock now. ____

B: Sorry. I've been to the hospital.

A: What? ____

B: No. I sent Jack to the hospital.

A: Oh, really? ____

B: He had a terrible headache on the way home.

A: Is he better now?

B: ____

A: Good for you, my dear! I'm very glad you can help others.

B: ____

原始的地球大气与现在的空气在成分上有明显的差别，那时的大气成分主要是（　　）