Students often think________their holiday is, ________they will have.
A:the long; the fun
B:the longest; the funniest
C:the longer; the more fun
D:longer; funnier
现在许多产品的包装箱中,一般都选用泡沫塑料制作.据你认为,在利用该材料的过程中:
优点是____ 和____
缺点是____ 和____
(1)化简:1a+1+1a-1÷aa+1+1;(2)解方程:3x-3=4x.
—What's this in the photo?—It's UFO.I took the photo.