A:糖原和RNA
B:糖原和DNA
C:淀粉和RNA
D:淀粉和DNA
—I'm hungry. Do you have anything to eat?
—No. Let's ________ super chicken sandwiches.
我国水资源地区分布特征是( )
①造旅游景点
②防洪
③给缺水的成都平原供水
④灌溉