①洋葱鳞茎表皮 ②小麦的根尖 ③动物卵巢 ④鼠的神经元
A:①
B:①②
C:②③
D:②③④
We ____ ( go ) home by bus yesterday.
- Do you like the green one or the yellow one?
- I have no idea. I can't decide __________.