Hi, my name is Sue. I am a student of Mingyang School. There are eighteen boys and nine girls in my class. And my classmate, Maria, comes from America. My English teacher is Steve. He can speak English and French. His Chinese is very good, too. He has a blue car. He is cool when he is driving. His lucky number is nine and mine is nine, too. Do you have lucky number, my dear friend?

根据短文，判断正（T）误（F）。

小题1:There are 27 students in my class.

小题2:Maria is from America.

小题3:My teacher, Steve, can speak two languages.（语言）

小题4:Steve has a black car.

小题5:My English teacher and I have the same lucky number.

图为嫁接的过程，请回答下

列问题：

（1）图中的①叫______，图中的②叫______．

（2）A图叫______，B图叫______．（填枝接或芽接）

（3）嫁接成功的关键是______．