根据花卉对光照长度的不同需要，可分为（）。
参考答案：长日照花卉、短日照花卉、中日照花卉和日中性花卉
连杆的小头与（）相联结。
He hurried out into the street and was knocked down by a ____ bike. He had his right arm ____.[ ]
A. past, hurt
B. passing, broke
C. passed, harm
D. passing, hurt
