$y=\frac{\sqrt{x^2+x+1}+sinx}{e^x+1}$ Tính đạo hàm

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1. Complete the dialogue with the sentences from the box. let's meet outside the cinema at Ó.45. what is it about? how about going to the cinema tonight? what's on? what kind of film is it? what are you doing this evening? who does it star? when is it on? Mai: (1) Jane: Nothing special. Why? Mai: (2) Jane: Good idea! (3)________________________________________ Mai: There is a Korean movie on at Grand Cinema. It’s My Little Bride. Jane: (4)._________________________________________________ Mai: It’s a romantic comedy. They say it’s very good and funny. Jane: (5) _________________________________________________ Mai: It’s about an arranged marriage between a female high school student and a male college student. Jane: That sounds good. (6) Mai: Moon Geun-young and Kim Rae-won. Jane: Oh, they’re two of my favourite actors. (7) _________________________________________ Mai: At 7 o’clock. Jane: Well, (8) Mai: OK. See you then! 8. Put the dialogue into the correct order. — Some are entertaining, but I find most of them stupid and childish. — I m sorry. I have some homework to do tonight. — I can’t stand western and horror. — So, what is your most favourite horror film? 1 What type of movies do you like? — The Ring.I m going to watch it again tonight. Do you want to watch it? -— That s an interesting combination. How about western movies? — Why don t you like horror? They’re entertaining, I think. — I’m fascinated by scary movies. — I like some sorts of movies, primarily drama and science fiction

Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects. One of the most common traffic problems the large cities have is congestion. As the population of a city increases, so does the number of cars on the road. Cities cannot always improve the number and size of their roads and highways to keep up with the number of cars. The result is traffic congestion, or traffic jams. When traffic jams happen, cars that are stuck in the congestion continue to run their engines. This creates pollution and is a big problems. Pollution causes health problems for the people in cities and also hurts the environment. A. Match the words with their meanings. 1. rural a. being too crowded or too full 2. noticeable b. unable to move 3. congestion c. easy to see or recognize 4. traffic jam d. in the countryside, not in the city 5. stuck e. too many vehicles in one place prevents B. Choose the correct answers. 1. Where do traffic problems and pollution frequently happen? a. small towns b. rural areas c. big cities d. remote villages 2. According to the passage, what causes traffic congestion in big cities? a. A lot of city dwellers b. Too many cars on the roads c. Careless drivers d. Less traffic signs on the streets 3. The high number of cars is caused by_________ a. urban planning b. traffic congestion c. environmental pollution d. the population 4. The highway and road network is ________ of meeting the requirement of increasing number of vehicles. a. full b. aware c. incapable d. uncertain 5. Which of the followings is NOT true? 5. a. Only big cities have the problem of pollution. b. Traffic jams cause pollution c. Pollution is a major problem in big cities. d. Pollution causes health and environmental problems.

III. Choose the best answer a, b, c or d to complete the sentence. 1. You should walk across the street ______ the zebra crossing. a. on b. at c. in d. from 2. My house is not far from my school, so I usually go ______. a. on foot b. by foot c. by car d. by boat 3. This morning, I was ______ in a traffic jam and got to school fifteen minutes late. a. catch b. block c. struck d. stuck 4. Turn on the left turn ______ before you make the turn and slow down. a. sign b. direction c. signal d. crossing 5. It is ______ to use a hand-held mobile phone while driving or riding. a. safe b. important c. illegal d. careful 6. ______ does it take you to ride to school? – About 30 minutes. a. How long b. How far c. How often d. How much 7. A ______ is a part of a road that only bicycles are allowed to use. a. cycle cross b. cycle lane c. cycle line d. cycle race 8. You ______ cross the street when the light is red. a. should b. don’t have to c. can d. mustn’t 9. People ______ produce as much rubbish as we do now. a. use to b. used to c. used to not d. didn’t use to 10. “How far is Vung Tau from Ho Chi Minh City”-“_______” A. It’s not very far b. it takes about two hours or more. c. It’s about 120km d. You can get to Vung Tau by boat or bus. IV. Write the correct from or tense of verbs in brackets. 1. ____________________ (you/ ever/ drive) on the wrong side of the road? 2. My family ______________ (fly) back from our Hong Kong holiday two days ago. 3. Right now, the students _______________ (learn) road signs in the schoolyard. 4. Usually Oanh ______________ (walk) to school, but this week she _____________ (ride) her bike. 5. The driver was so drunk that he ______________ (lose) control of his car. 6. If I have enough money, I _________________ (buy) a racing car. 7. My father ________________ (teach) me to ride a bike when I was seven. 8. Transport used ______________ (be) much slower three hundred years ago. 9. Saudi women weren’t allowed ______________ (drive) a car until recently. 10. In South Africa, you have to let animals ________________ (go) first. V. Supply the correct form of the words in brackets 1. Young children are expected to show _____________ to their parents. (obey) 2. When cycling on the roads, remember: _____________ first. (safe) 3. Children should avoid _____________ foods such as hamburger and chips. (health) 4. Most road accidents happen because the motorists drive _____________. (care) 5. It is unsafe and _____________ to pass another vehicle on the left. (legal) 6. My _____________ was delayed for over two hours due to bad weather. (fly) 7. Everyone should _____________ obey traffic rules for their own safety. (strict) 8. The policeman _____________ the car to stop with a flashlight. (sign) 9. Signs with red circles are mostly _____________ - that means you can’t do something. (prohibit) 10. This _____________ sign indicates that traffic lights are ahead. (warn)