I. Viết lại cau sau sao cho nghĩa không đổi

1.`Timmy is very interested in reading picture books.

Timmy is keen on reading picture books

2. What is your hobby?

What do you like doing most ?

3. When is your birthday?

What is your date of birth ?

4. What is the time?

What..............time is it..............................?

5. The last month of the year is December.

The year's last month is December

6. Marry is out right now.

Mry isn't at home right now

7. He can't the car. It is very expensive.

The car is too expensive for him to buy

8. I had no intention of giving any more money.

I didn't intend giving any more money

9. The streets in big cities are usually more crowded than those in the countryside.

The streets in the countryside are not as crowded as those in the countryside

10. I will ask Tom to repair the car for you.

I will have Tom repair the car for you

11. I can't play the guitar very well.

I am not very good at playing the guiter

II. Điền giới từ

1. Her house is far ........from................. her school.

Every morning from Monday to Saturday, I get up at 6 o'clock. After breakfast, I go to school by bicycle. It takes me about 20 minutes from my house to my school. Usually, I study at school until 11:30 a.m. I return home at noon to have lunch with my family. In the afternoon I attend English and computer courses. I always get home just in time for dinner at 7:30 p.m. After dinner, while my parents are watching television in the living-room, I read books or prepare for school in my own room.

I am free at weekends. On Sunday mornings, I get up later than usual. Then I often go shopping downtown with my friends. Sometimes we go for a picnic in the countryside. On rainy Sundays, I stay at home reading books and listening to music.

I am quite happy with my daily activities.

A=\(\frac{1}{2}\left(\frac{1}{1.2}-\frac{1}{2.3}\right)+\frac{1}{2}\left(\frac{1}{2.3}-\frac{1}{3.4}\right)......+\frac{1}{2}\left(\frac{1}{37.38}-\frac{1}{38.39}\right)\)

\(=\frac{1}{2}\left(\frac{1}{1.2}-\frac{1}{2.3}+\frac{1}{3.4}-\frac{1}{4.5}+.....+\frac{1}{37.38}-\frac{1}{38.39}\right)\)

\(=\frac{1}{2}\left(\frac{1}{1.2}-\frac{1}{38.39}\right)\)

\(=\frac{1}{2}.\frac{-10}{19}\)

\(A=\frac{-5}{19}\)

(THPT Đồng Đậu – Vĩnh Phúc – lần 1 2019): Gen H có 90 vòng xoắn và có 20% Ađênin. Một đột biến xảy ra tạo ra alen h. Alen đột biến ngắn hơn gen ban đầu 3,4 A⁰ và có số liên kết hiđrô ít hơn 2. Số nuclêôtit từng loại của alen h là

A. A = T = 360; G = X = 537

B. A = T = 360; G = X = 540

C. A = T = 359; G = X = 540

D. A = T = 363; G = X = 540

Ngày thứ hai cửa hàng bán được là \(\frac{2}{5}+\frac{1}{6}=\frac{17}{30}\) (số gạo)

Ngày thứ ba cửa hàng bán được là \(1-\left(\frac{2}{5}+\frac{17}{30}\right)=\frac{1}{30}\) (số gạo)

Số tạ gạo lúc đầu cửa hàng có là 30 : \(\frac{1}{30}\) = 900 (tạ)

I. Use the words or phrases given to make meaningful sentences.
1. you/ tell/ me/ how/ cook/ rice/,/ please/ ?

=> Can you tell me hơ to cook the rice please?
2. there/ orange juice/ left/ fridge/ ?

=> Is there any orange juice left in the fridge ?
3. Dong Ho painting/ made/ hand/ they/ show/ animals/ legends/ everyday life.

=> Dong Ho paintings are made by hand and they show animals,legends and everyday life
4. There/ milk/ left/ you/ have/ lemonade/ instead

=> There isn't any milk left but you can have some lemonade instead of
5. The roads/ neighborhood/ not/ narrow/ they/ before/ .

=> The roads in our neighbourhood aren't as narrow as they before
6. Pop music/ not/ exciting/ rock and roll/.

=> Pop music isn't as exciting as rock and roll
7. mother/ not/ like/ boiled meat/ sister/ either/.

=> My mother doesn't like boiled meat and my sister doesn't either
8. What/ I/ like/ do/ most/ spare time/ drawing/.

=> What i like doing most in spare time is drawing

II. Rewrite the sentences
1. I like country music. My friends like country music, too. (SO)
-> I like country music and so do my friends
2. Spider-Man 2 is more boring than Spider-Man 1 (AS)
-> Spider-Man 2 isn't as exciting as Spider-Man 1
3. My sister is not good at singing and I am not, either. (NEITHER)
-> My sister is not good at singing and neither am I
4. Mr. Phương teaches literature and Mr. Lam also teaches literature (SAME)
-> Mr. Phương teaches literature and Mr. Lam is the same as Mr.Phương
5. He started playing the piano when he was only 4 years old. (SINCE)
-> It's only 4 years since he has started play the piano
6. What's the price of the tickets, Jimmy? (MUCH)
-> How much do the tickets cost , Jimmy?
7. My mother is a very good cook. (WELL)
-> My mother cooks very well

8. Not many people came to the party. (ONLY)
-> There were only few people at the party

rồi

12 + 12 + x + 12 + 12 = 65

x = 65 - ( 12 x 4 )

x = 65 - 48

x = 17

(3x+1)^2 = (x-1)^2

<=>(3x+1)²-(x-1)²=0

<=>(3x+1-x+1)(3x+1+x-1)=0

<=>(2x+2)4x=0

<=>2(x+1).4x=0

<=> 8x(x+1)=0

<=>8x=0 hoặc x+1=0

<=> x=0 hoặc x=-1