读 《各具特色的民居》，根据课文内容填空

①客家先民崇尚圆形，是因为他们认为____。

②因为____，傣族人家依然保持着“多起主楼，____”的习惯。

根据短文理解，选择正确答案。

    Do you want to be a reporter? Are you a good English writer who loves the news? We're looking for 100 students from all over the world. They will join the BBC Kid Reporter team for the 2016－2017 school year.

    In the past, BBC Kid Reporters:

★Interviewed (采访) some famous people.

★Wrote news stories for BBC For Kids.

★Talked about their work on television.

Next year our team will go on to report local news stories for BBC For Kids magazine (杂志) and bbcforkids.com.

How to Enter

    Visit www. bbcforkids.com and fill in the entry form (报名表). Be sure to read the rules and share them with your parents, who must sign your form. You must finish the form by July 9, 2016. You must be OVER 13 years of age. Good luck!

选词填空

已    以

①我____后见不到灰雀了。

②灰雀____经飞走了。

在     再

③我____也见不到灰雀了。

④一只灰雀停____树上。

2016年IUPAC命名117号元素为Ts（中文名“ ”，tián），Ts的原子核外最外层电子数是7，下列说法不正确的是（　　）