138÷7≈____     298÷5≈____     274÷9≈____

读句子，选择适当的答语。

①What's he like? ____          

②Who's your Chinese teacher?____   

③Is she young? ____            

④Do you know Mr. Li?____      

⑤I have a clever robot. ____     

A. No, she isn't.

B. Ms. Wang.

C. He is polite.

D. Really?

E. Yes, I do. 

科学家在我国辽宁首次发现了迄今最早的真双子叶被子植物化石一“李氏果’。判断“李氏果”是被子植物的主要依据是(       )