We would like you _______ and we look forward _______ you.
A:to come; to see
B:come; to seeing
C:come; to see
D:to come; to seeing
—Children's Day. On that day I can get some nice things from my parents.
在植物蒸腾作用的实验中,选取两种植物上两株大小相同的枝条,依下面A图所示的方法进行处理.实验开始时,a、b两实验装置的重量都是80g,其后每隔一段时间记录两个装置的重量变化,得到下面B图所示的实验结果.上述实验表明,植物进行蒸腾作用的主要器官是( )
图是人体消化系统模式图,请根据图回答下列问题.(内填代号)