Cho bang so lieu:

Dan so va san luong luong thuc nuoc ta giai doan 1980-2008

a) Tinh nang suat lua tu 1990-2008

b) Ve bieu do the hien toc do tang truong dien tich, nang suat, san luong lua ca nam giai doan 1990-2008

c) Nhan xet va giai thich nguyen nhan su tang truong do

Cho bang so lieu:

Khoi luong hang hoa van chuyen phan theo nganh van tai cua Viet Nam (don vi: nghin tan)

a) Ve bieu do honh tron the hien co cau khoi luong hang hoa van chuyen theo nghanh van tai cua nuoc ta

b) Nhan xet ve quy mo va co cau khoi luong hang hoa van chuyen phan theo loai hinh van tai nuoc ta

c) Giai thich tai saao giao thong van tai duong bo chiem ti trong cao nhat trong co cau khoi luong hang hoa van chuyen

Giai he phuong trinh:

a) \(\left\{{}\begin{matrix}x+y=5\\xy=5\end{matrix}\right.\)

b) \(\left\{{}\begin{matrix}x-y=1\\xy=6\end{matrix}\right.\)

Viet doan van khoang 10 cau theo mo hinh tong-phan-hop, trong do co su dung phep the va tinh thai tu de neu cam nhan cua em ve loi cua Vu Nuong noi voi than song ben Hoang Giang truoc khi chet

Rut gon bieu thuc:

P=\(\frac{xy-\sqrt{x^2-1}.\sqrt{y^2-1}}{xy+\sqrt{x^2-1}.\sqrt{y^2-1}}\) voi \(x=\frac{1}{2}.\left(a+\frac{1}{a}\right)\); y=\(\frac{1}{2}.\left(b+\frac{1}{b}\right)\) va \(a\ge1;b\ge1\)

Doc doan van tra loi cau hoi:

Every year students in many countries learn English

Chon cau viet lai dung:

1. I'm always nervous when I travel by air

A. I always feel nervous, so I never travel by air

B. Traveling by air always makes me nervous

C. Being nervous makes me travel by air

D. Travel by air always makes me nervous

2. I've never eaten this kind of food before

A. I've never eaten such a good food before

B. The food is so good that I've never eaten before

C. It's the most tasty food I've ever eaten

D. It's the first time I've eaten this kind of food

3. A friend in need is a friend indeed

A. Only in dangerous situations should we need a friend

B. A friend who helps us in difficult situations is a true friend

C. Indeed, we need a true friend in every situation

D. A friend in need is not a good friend

4. We don't have her number so we can't contact her now

A. If we have her number, we will contact her now

B. Had we her number, we could contact her now

C. Should we have her number, we could contact her now

D. If we had her number, we could contact her now

Doc doan van:

Water is our life soucre. It makes up seventy percent of our bodies, and the average person actually...(1)...eighteen months ih the bath or shower.

However, it is till now that we are learning how to...(2)...water. Acid rain has polluted as many as 18000 lakes and our seas and rivers are polluted..(3)...waste products. It is now very ecpensive to repair the damage...(4)...has been caused. However, we have some hope for the future. New sources of water have been discovered in parts of the world...(5)...we have learnt something from our mistakes, we will have to try to keep our new sources clean

1. A. takes B. gets C. has D. spends

2. A. look after B. look over C. turn over D. turn up

3. A. in B. with C. from D. under

4. A. this B. whose C. that D. where

5. A. although B. moreover C. if D. unless

Chon cau tra loi dung:

1. She can't get home.......she has some money

A. if B. in case C. while D. unless

2. That house is in terrible condition, you can see, it....for years

A. hadn't been painted C. hasn't been painted

B. wasn't painted D. isn't painted

3.........he was a brilliant scientist

A. It is said that B. He is said that C. It was said D. It is saying

4. Exposure to pollution can cause many serious illnesses.....to death

A. which led B. led C. that led D. leading

5. The doctors are trying their best.....the injured woman

A. to save B. save C. saving D. to have saved

6. I think you.....better not worry too much about that

A. had B. should C. could D. will

7. Thank you very much......the Christmas present

A. for B. after C. about D. with

Doc doan van va tra loi cau hoi:

After an earthquake happens, many people can die from lack of food, water and medical supplies. The amount of destruction caused by an earthquake depends on types of building, soil conditions anf population. There are over 6000 earthquake in the world a year but only 20 of them cause great damage and deaths. If we could prediict earthquake before they happen, we could save a lot of people each year. Nowadays man can control many things about nature, but can not control earthquakes

1. Could we predict earthquake before they happen?

A. Yes, they could

B. No, we couldn't

C. No, earthquake could be predicted

D. Yes, earthquake could be predicted

2. What could we do If we could predict earthquake before they happen?

A. We could save a lot of people each year

B. We could control the damage

C. We could prevent from being deaths

D. We could do nothing

3. How many earthquake cause great damage and deaths?

A. Only 20 B. Over 6000 C. Only 20 of 6000 earthquake D. A&C are correct

4. What happens after an earthquake?

A. Many people can die C. Causes great damage and deaths

B. Many people lack of things D. B&C are correct