2/3+2/15=10/15+2/15=12/15=4/5

1.C.Nhà Tần

2.D.Tần Doanh Chính

8

1.A

2.C

3.A

4.B

5.C

6.B

7.C

8.A

9.C

10.B

11.A

12.B

13.C

14.C

15.C

16.C

17.C

A

37.12 + 37 .88 - 137.25 + 37.25

= 37. ( 12 + 88) - 25.( 137 - 37)

= 37. 100 - 25 . 100

= 100.( 37 - 25)

= 100. 12

= 1200

3 played

4 did you go

5 Have you ever met

6 wasn't

7 has visited

8 switched

9 have lived

10 haven't been

(-45)+x=270

D