“第一条，…立法权，全属合众国的国会；第二条，…行政权力赋予美利坚合众国总统；第三条，…司法权属于一个最高法院以及由国会随时下令设立的低级法院…”。这则材料应该选自（  ）

读“中国土地利用类型的构成图”，完成下列各题。

【小题1】由上图，判断下列说法不正确的是              （   ）

【小题2】耕地资源中，我国东部旱地和水田之间的界线是   （   ）

判断 阅读下面的材料，判断下列句子是否符合短文内容。符合的涂T，不符合的涂F。（T="True," F = False)
   What is color? Why do some of the things around us look red, some green, others blue?
   Colors are really made by reflected(反射) light. We can see colors because most of the things reflect light. Something is red, for it reflects most of the red light. In the same way, if something is green, it reflects most of the green light. If something reflects all light, it is white. If it doesn't reflect any light, it is black.
   Some light is reflected. But the other light is taken in and turns into heat. The darker the color is, the less light is reflected, and the more light is taken in. For this reason, dark-colored clothes are warmer in the sun than light-colored clothes.