I want to use the same dictionary ______ was used yesterday.
A:which
B:who
C:what
D:as
按拼音写汉字
guì lín
dàng yàng
guān shǎng
____
下列可用于观察染色体结构的材料是( )
①洋葱鳞茎表皮 ②小麦的根尖 ③动物卵巢 ④鼠的神经元
When does Mike usually go to school?