正确答案: B

由长宽比例以及较宽部分的位置

题目：叶片的形状是根据( )决定的。

解析：B

查看原题

举一反三的答案和解析：

[单选题]What did duret do shortly after the ambulance came?

He disappeared from the spot quickly

解析：

 细节理解题。根据第二自然段的最后一句可知本题选D。

[单选题]Some of you may have finished unit one. _____ , you can go on to unit two.

If so

[单选题]We know from the text that Ginger Gray ．

teaches at Dixie Heights High School

[单选题]What did the “service pins” (in Para.2) stand for in the eyes of the little girls?

Honor.

[单选题]What clis the hor tell us in the 3rd passgiaph?

His father’s letter removed his fear of failing his parents.