Excuse me, would you please tell me _________ buy a digital camera?
A:what to
B:where to
C:what I can
D:where can I
Miss Brown, we cleaning our classroom. Can we go home now?
下列对病毒、细菌和真菌的描述,正确的是 ( )。
如果用14升桔子浓度冲入134升水制成桔子水,可供4人饮用,现在要为14人冲入同样“浓度”(这里,“浓度”=)的桔子水,需要用桔子浓缩汁( )