A：Trees
B：Wood
C：Water
从右栏中找出左栏各句的应答语。
①What does he look like?____ A. It's yellow.
②Is his bike new?____ B. Yes, they are.
③Whose book is this?____ C. He has gray hair.
④Are these your apples?____ D. Sorry, I don't know.
⑤What color is your coat?____ E. It's mine.
下列物品中，重量约为1N的是（ ）
学校到县城有28千米，全程需1小时，除乘汽车外，还需要步行一段路，已知汽车的速度为36千米/时，人步行的速度为4千米/时，则步行用了（ ）
