20 : 2+ 1- 4 x 3 -12 : 4 = -4

B

1. Can/ tell / way/ Art gallery ?

Can you tell me the way to the Art gallery?

3. Ha Long Bay is more famous than Phu Quoc island.

4. Fansipan is the highest mountain in Viet Nam.

D,B

B C

gọi đáy nhỏ là a

ta có a=3/2(40-a)

=>a=60-3/2a=>5/2a=60=>a=24

vậy h=0,136*1000*2/(40+24)=4.25 cm

B

Dùng từ gợi ý viết thành câu hoàn chỉnh

There/be/ many natural wonders/ Viet Nam/ but/ I think/ Ha Long Bay/ the good

There are many natural wonders in Viet Nam but I think Ha Long Bay is the best.

You/can/ get there/ car as/ bus.

 You can get there by car or bus.

It/ have/ many/ beautijul caves/ Tuan Chau island/ be /the big.

It has many beautiful caves but Tuan Chau island is the biggest.

There are many man-made wonder naturals in Vietnam.