—
Hello, friends! This is my classroom. It is very big. The walls are white. You can see a teacher's desk, a computer, four pictures, five windows and six lights. The computer is black. It's on the teacher's desk. The pictures are on the wall. The windows are yellow. The lights are green. You can see many desks and chairs. They are blue.
A.变幻莫测 B.千变万化 C.日月如梭 D.反复无常
Thirteenfiftyeighteenfortytwentyseventeeneleven
4.6×57=
0.46×57=
46×5.7=
46×0.57=