____是长方形，____是正方形，____是圆，

____是三角形，____是平行四边形。

阅读下面对话，从方框内七个选项中选择五个恰当的句子完成此对话。

A: Hello, this is Lucy speaking. Is that Li Wei?

B: Hi, Lucy! ____ We are expecting your coming.

A: Thank you!My plane leaves Beijing this afternoon.  

B: ____

A: It's CA1409.

B: OK, CA1409. ____

A: At 3:30 in the afternoon.

B: Leaves at 3:30, and arrives...

A: It arrives at 6:10, and I'll have to wait some time for my luggage(行李).

B: All right. ____

A: Thanks a lot. ____

B: I've ordered a room for you in the center of the city near my home.

A: Wonderful! See you then!

B: See you!

A. When does it take off?

B. How about my hotel?

C. When does it arrive?

D. What's your flight number?

E. This is Li Wei speaking.

F. Who will meet you?

G. I'll wait for you at the gate at 6:30.

仅含碳、氢两种元素的有机物叫烃，碳原子数在4及4以下的烃在常温常压时通常为气体．常温常压时烃C₂H₄和另一种烃组成的混合气体中碳元素的质量分数为87%，则另一种烃可能是（   ）

An orange is a little ____ (big) than an apple, but much ____ (small) than a watermelon.