(1-2x)^2 =? hằng đẳng thức các bác ớiiiiiii

Even before it is born, a baby has small teeth under its gums. At about the age of six months, its first tooth starts to grow. Before the young child is three years old, it has twenty small teeth. Between the ages of six and twelve a second set of teeth form in the gum bellow the first teeth and push them out. a. __________ A baby has teeth under its gums even before its birth. b. __________ A baby’s first tooth appears as soon as it is born. c. __________ A three-year-old child has twenty tiny teeth. d. __________ A child’s second set of teeth appear before it is six years old. 8. Read the paragraph, then do the tasks given below. Today, television becomes very popular because both old and young people enjoy watching it very much. TV brings us many interesting programs such as: music, cartoons, sports, films, especially news around the world …We only stay at home and enjoy the programs we like. We also can see and learn about people, places and things in far away lands. TV is one of the cheapest means of communication. a. __________ All people like watching TV so much. b. __________ There are some interesting programs on TV. c. __________ We can’t watch news around the world on TV. d. __________ We can stay at home and watch the programs we like. e. __________ We can know about people, places, and things on TV. f. __________ TV is the most expensive means of communication. 9. Read the paragraph, then do the tasks given below. Hoa used to live in a village near Hue. She moved to Ha Noi not long ago. She loves the capital but she does not like city life very much because there is too much traffic as well as noise. She is afraid of crossing the streets because they are busy with bikes, motorbikes and cars coming from every dirrection. Morever, when she lived in her home village, she knew all the people there, but now she does not know the people in her new neighborhood. Therefore, she seldom goes out. She hopes she will get used to the city life soon. a. __________ Hoa still lives in Hue now. b. __________ She prefers the country life to city life. c. __________ She isn’t afraid of crossing the streets. 10. Read the passage and choose the best answer to each of the blanks. People of different ages (26)______different tastes for TV programs. Young children like (27)______cartoon most. So there (28)______many kinds of films on children’s corner. Tenagers like sports shows, fashion shows, movies (often romatic, horror or detective), music (often pop and rock) and sometimes cartoons. But there (29)______not many good programs for people of this age. Adults prefer (30)______ the news, reports, movies and contests. Old people like watching and listening to classical music most. They also watch movies, news and other programs that suit them. 1. A. has B. have C. are having 2. A. to watch B. watching C. A&B are correct 3. A. are B. is C. will be 4. A. is B. will be C. are 5. A. watching B. to watch C. A&B are correct

Mn oi giup mik vs ah mik dng can gap ah

viet da thuc duoi dang tong cua 2 binh phuong : a, 2x^2+y^2+2xy-2x-4y+5 b, x^2+2y^2+2xy+2x+2 lam nhanh cho minh cai

mình đang cần gấp lắm ạ. Ai làm mình đánh giá 5 sao nhé! I. Fill the gaps in this text with one suitable word. Disaster! About 70 years ago, a Dutch ship was 1) ..... near the North Pole; it 2) ..... heading for Blacklead Island. On the ship was a scientist, Edgar Greenhead, who 3) ..... worked on the island for many years; he had 4) ..... conducting research into the life of the local inhabitants, who were Eskimos (Inuits). Greenhead had 5) ..... away for a long holiday and now he was 6) ..... back to the island to continue his work. At about midnight, Greenhead felt very tired as he had 7) ..... writing his journal all day. After he had 8) ..... goodnight to the captain, he 9) ..... down to his cabin. Outside there 10) ..... a strong wind, and the waves 11) ..... crashing onto the side of the ship. Greenhead was just 12) ..... ready to climb into his bunk when he suddenly 13) ..... a great crash. He dashed up on the deck and although it was dark he 14) ..... see that the ship 15) ..... run onto an iceberg.

các phương thức lưu trữ hydrogen trên ô tô xe gắn máy

4. Read the paragraph, then do the tasks given below. Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved. People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing. The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources. a. __________ Non-renewable sources are being used up. b. __________ Many poor people in developing countries do not have little electricity c. __________ Biogas is a new source of energy available for poor people. d. __________ Biogas creates a lot of smoke. e. __________ The new energy source is not costly. 5. Read the paragraph, then do the tasks given below. Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice. The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It can not provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world. a. __________ Many people aren’t interested in the problems of energy b. __________ The word “energy” is familiar and close to everyone’s daily life. c. __________ Energy is heard, said, discussed day after day. d. __________ We can’t watch TV without energy. e. __________ The supply of energy on earth is unlimited. It can provide us forever. f. __________ If we want to continue to live in a safe and sound world, we have to save energy. 6. Read the paragraph, then do the tasks given below. When Nam was twelve, his family moved to the city. At first, every thing was strange and difficult to him. Life in the city is always busy. He hated the noise and the busy roads. He hated crossing the road most. A lot of bikes, motorbikes, cars and buses coming from every direction scared him. He gets used to the life in the city now. He is no longer afraid of crossing the road but he doesn’t really like to live in the city. He prefers to live in the country. a. __________ Nam’s family moved to the city when he was twelve. b. __________ Everything was normal. c. __________ Now Nam isn’t afraid of crossing streets. d. __________ Nam likes to live in the city.

helppppppppppppppppp Viết lại các câu bằng cách sử dụng các từ đã cho 1. Lucy’s hair is shorter than my hair. (not as … as) 2. I love jazz, and my sister also loves jazz. (too) 3. My mother's favorite food is noodles. My favorite food is rice. (different from) 4. Minh and Hoa will travel to Ho Chi Minh city tomorrow. (too) 5. Kate and Hoa didn't go to the art gallery yesterday. (either)

1. Read the paragraph, then do the tasks given below. Nowadays, television becomes very popular. Both old and young people enjoy watching it very much. TV programs attract millions of viewers all around the world. In addition to the news, television stations also broadcast many interesting programs such as sports, music, cartoons, wild life, popular science, reports, contests, movies, etc. At present, people can enjoy a live program on TV. Live TV program helps us see events at the same time as they are happening. In our country, we often watch live TV programs of important events and international football matches. a. __________ There are a few people watching TV all around the world. b. __________ Television stations broadcast many boring programs. c. __________ We can enjoy a live program on TV. d. __________ Television doesn’t become popular nowadays. 2. Read the paragraph, then do the tasks given below. Nowadays, football becomes one of the world’s most popular games. Millions of people play and watch it all around the world. A football match often has two parts. Each part is forty-five minutes. The first part is the half and the second part is the second half. There is a fifteen-minute break beteen the two halves. There are two teams in a football soccer match. Each football team has eleven players, including a goal-keeper. The players on the ground try to kick the ball into the other’s goal. The team which scores more goals wins the match. a. __________ Today, football is a popular sport all around the world. b. __________ A football match often has two halves of forty-five minutes each. c. __________ There is no break in a football match. d. __________ Each football team has eleven players and a goal-keeper in the field. 3. Read the paragraph, then do the tasks given below. Many people still believe that natural resources will never be used up. Actually, the world’s energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnharm of the New England Institude of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative. However, many people do not approve of using nuclear power because it’s very dangerous. What would happen if there was a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economical as possible. a. __________ Natural resources will run out. b. __________ The world’s energy resources are unlimited. c. __________ We know exactly how much fuel is left. d. __________ We should use fuel economically. e. __________ According to Professor Marvin Burnham, nuclear power will be used as a substitute for natural resources. f. __________ Many people disagree to use nuclear power as an alternative energy. g. __________ Radioactivity from nuclear power causes cancer and may have bad effect on the future generations. h. __________ Natural resources should be used as economical as possible.

CÁC BẠN GIÚP MÌNH VỚI !!!!!!!!!!!!!!!!!!!!!!!!