根据课文《土地的誓言》,在横线处填上恰当的关联词语。
我总是被这种声音所缠绕,____我走到哪里,____我睡得很沉,____在睡梦中突然惊醒的时候,我____会突然想到是我应该回去的时候了。
如图1中甲、乙、丙三条曲线分别表示食物中三种营养物质在消化道中的变化情况,读图并填空:
--I think it's really necessary. It is reported that the food that Chinese people
every year is enough to feed 200 million people for a year.
下列都有真正的根、茎、叶的植物是( )