I;II;III;IV;VI;IX;XI;IL;L

1.Street are decorated with coloured lights and red banners. (colour)

2.There are many cultural differences between the two communities. (culture)

3.She gave a wonderful performance as the Iron Lady - the former British Prime Minister Margaret Thatcher. (perform)

4.There were lively New Year celebrations all over the town. (celebrate)

5.When we heard she'd got the job, we all went off for a celebratory drink. (celebrate)

6.It's traditional in America to eat turkey on Thanksgiving Day. (tradition)

7.What forms of entertainment do you participate in during the festival?(entertain)

8.The hall looked very festive with its Christmas tree. (festival)

9.Her eyes were wide with exciting when she heard the news.(excite)

10.The Chinese New Year marks the beginning of spring and the start of the Lunar New Year. (begin)

1/Liz /vacation/Nha Trang/last summer/very wonderful.

--> Liz's vacation in Nha Trang last summer was very wonderful.

2 Parents/take me/see/One-Pillar Pagoda/yesterday.

--> My parents took me to see the One-Pillar Pagoda yesterday.

3 David/buy/lot/diffenrent gifts/friends/America.

--> David bought a lot of different gifts for his friends in America.

4 You speak/Nga/vacation/Sam Son beach/this morning?

--> Did you speak to Nga your vacation in Sam Son beach this morning?

5 Mr.Hoang/and/family/come/visit/us/next weekend.

--> Mr.Hoang and his family are going to come to visit us next weekend.

6 Viet/not go camping/his class/last Saturday.

--> Viet didn't go camping with his calss last Saturday.

7 Mrs . Mai/buy/material/and/make/dress/me.

--> Mrs. Mai bought material and made a dress for me.

8 Hue /always/give me/stamps/from/letters/receive.

--> Hue always gives me stamps from the letters she receives

9 Aunt/dressmaker/and/work/big shop/city center.

--> My aunt is a dressmaker and she works in a big shop at the city center.

10 Nhung /learn/how/use/sewing machine/and make/cushion/her room.

--> Nhung is learning how to use sewing machine and make a cushion for her room.

hiệu 2 số là: 21x2+1=43

số bé là: (2001-43)/2=979

1. What is your height? (high)

2. Lan was absent from class because of her sickness(sick)

3. What is the length of that street. (long)

4. One of the most important invention is the computer. (invent)

5. Eating too much sugar is unhealthy for your life. (health)

6. The most popular action in our school at recess is talking. (atc)

7. Hoa is unhappy because she lives very far from her family. (happy)

8. Who is the best student in your class? (good)

9. It is very dangerous to driver fast.(danger)

10. The Doctor wanted to know my height and wight. (high)

\(\text{ ta có: }\frac{a}{b}=\frac{a.\left(b+2015\right)}{b.\left(b+2015\right)}=\frac{a.b+2015.a}{b^2+2015.b}\)

\(\frac{a+2015}{b+2015}=\frac{b.\left(a+2015\right)}{b.\left(b+2015\right)}=\frac{a.b+2015.b}{b^2+2015.b}\)

Nếu a>b thì :

\(a.b+2015.a>a.b+2015.b\Rightarrow\frac{a.b+2015.a}{b^2+2015.b}>\frac{a.b+2015.b}{b^2+2015.b}\)

hay \(\frac{a}{b}>\frac{a+2015}{b+2015}\)

Nếu a=b thì:

\(a.b+2015.a=a.b+2015.b\Rightarrow\frac{a.b+2015.a}{b^2+2015.b}=\frac{a.b+2015.b}{b^2+2015.b}\)

hay \(\frac{a}{b}=\frac{a+2015}{b+2015}\)

Nếu a<b thì: