题型:探究题 从如图所示研究光的反射实验中,你可以获取哪些物理信息,请写出两条。 (1).______________________________________________________________; (2).______________________________________________________________。 查看答案
题型:选择题 _____ lie in the sun for too long, _______ you will get sunburnt. [ ]A. Not; and B. Don't; otherwiseC. Shouldn't; for D. Let's not; and 查看答案