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12 tháng 10 2018

32/3 nha ban

11. People are advised to ___________ smoking because of its harm to their health.A. cut down                   B. cut down on     C. cut off              D.  cut in12. Linda wanted to know___________. A. when the exam will be taken                   B. when the exam would be taken    C. when will the exam be taken                    D. when would the exam be taken. 13. Let me have some drink, ___________?A. will you                    B. shall we           C. won’t you                   D. may...
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11. People are advised to ___________ smoking because of its harm to their health.

A. cut down                   B. cut down on     C. cut off              D.  cut in

12. Linda wanted to know___________. 

A. when the exam will be taken                   B. when the exam would be taken    

C. when will the exam be taken                    D. when would the exam be taken.

 

13. Let me have some drink, ___________?

A. will you                    B. shall we           C. won’t you                   D. may I

14. Vietnam has experienced 70 days without___________ cases of COVID-19 in the community.

A. recording                             B. searching                    C. existing            D. discovering

15. She tried to stop the dog ___________ running into the road.

A. from                          B. to                     C. against             D. for

16.  Among ___________ethnic minorities, ___________Tay people have the largest population

A. the/ Æ                        B. Æ/ Æ                C. the/ a                D. the /the

17. The state laws limit the speed ___________ motorists are permitted to drive.

A. at which                     B. which                C. that                   D. where

18. It is important to ___________the wonder of the world for the future generation

A. destroy                       B. ignore               C. remain              D. preserve

19. She is far too___________ to be in charge of all those children.

A. disresponsible            B. unresponsible   C. irresponsible     D. inresponsible

      20.  Jane really loves the ___________that her parents gave her as a birthday present.

       A. wooden brown nice jewelry box                         B. nice wooden brown jewelry box     

      C. nice brown wooden jewelry box                          D. brown wooden nice jewelry box                                           

1
19 tháng 8 2021

11 B

12 B

13 A

14 C

15 A

16 D

17 A

18 D

19 C

20 C

1 tháng 2 2021

Given, A solid cube is cut at middle to make two make two cuboids.

Let the side of the cube be a and it is cut at middle. So breadth of newly formed cuboids is (a/2), length isa, height is a.
Total surface area of cube=6a2
Total surface area of cuboids = Surface area of  cuboid
                                                 =2(lb+bh+lh)=2(2a​×a+a×a+2a​×a)=4a2

Ratio of total surface area of cube to cuboid =4a26a2​=3:2