6 : 2 ( 1 + 2 ) = 6 : 2 x 3 = 3 x 3 = 9

Cho hình vẽ. Biết AB \(\perp\)AC, \(\widehat{DAC}=140^0\), \(\widehat{EBA}=50^0\), \(\widehat{FCA}=40^0\). Chứng tỏ rằng :

a) AD // CF

b) AD // BE

1. Viết các danh từ tương ứng với :

1. A place you sleep at night

2. A place you can cook

3.A place you have bath or shower

4. A place youcan put books on

5. Something beautiful you can look at on the wall

6. Something two or three people can sit on

7. Something you can use to wash your dirty clothes

8. Something you can use to cook food

9. Something you can keep food in

10. A place you can see movies

VIết câu cảm thán cho các tình huống sau :

1. That student is very good.

2. That bicycle is very old.

3. This book is very interesting.

4. This is a very comfortable room.

5. These are modern computers.

6. This is a very nice kitchen.

7. She is an intelligent girl.

8. This cake is delicious.

9. They are very expensive dresses.

10. He is very friendly.

tăng lên 4

Cho hình vẽ. Tính các góc \(\widehat{O_1}\), \(\widehat{O_2}\), \(\widehat{O_3}\), \(\widehat{O_4}\)

Trong các trường hợp sau :

a) \(\widehat{O_1}+\widehat{O_2}=140^0\)

b) \(\widehat{O_1}+\widehat{O_3}=\widehat{O_2}+\widehat{O_4}\)

c) \(\widehat{O_2}-\widehat{O_1}=10^0\)

Cho dãy số u n  được xác định như sau:

u 1 > 0 u n + 1 = u n u n 2 + 3 3 u n 2 + 1

Tùy thuộc vào giá trị của  u 1 , tìm khẳng định ĐÚNG khi nói về tính tăng, giảm và bị chặn của dãy  u n ?

A. Với mọi u 1 > 0  thì dãy  u n luôn bị chặn

B. Nếu  u 1 < 1  thì dãy  u n  giảm

C. Nếu  u 1 > 1  thì dãy  u n  tăng

D. Nếu  u 1 = 1  thì dãy  u n  là tăng

Cho một khối lăng trụ có thể tích là 3 .a 3 , đáy là tam giác đều cạnh a. Tính chiều cao h của khối lăng trụ.

A. h = 4a

B. h = 3a

C. h = 2a

D. 12a

Read the text and decide if the following statements are True (T) or False (F)

          Hoi An, once known as Faifo, with more than 2,000 years history, was the principal port of the Cham Kingdom. While the serious shipping business has long been moved to Da Nang, the heart of the city is still the Old Town, full of winding lanes and Chinese-styled shop-houses. Although almost all shops now cater to the tourist trade, the architecture has been largely preserved, which is unusual in Vietnam, and renovation has proceeded slowly and carefully. 

          However, the culture & heritage that this UNESCO World Heritage Site (WHS) was trying to preserve has faded away. Since 1999, when UNESCO WHS status was awarded, there has been a massive increase in tourism - with the result that most houses have been sold by the community to speculators and shop owners to be used for commercial purposes. The former community, and with it their culture and heritage, has gone and in their place are endless indistinguishable shops, restaurants, art galleries, etc. There are literally hundreds of tailor shops in Hoi An.

Question: There are more than 100 tailor shops in Hoi An

A. True

B. False