X.Read the passage carefully then do the tasks.

China has more people than any other country in the world. China is almost equivalent, land-wise, to the United States. However, China has a much larger population.

The bars on the graph above compare the populations of China and the United States. Over 1,300,000,000 people live in China. This is four times more than the number of people who live in the United States!

Many Chinese live in cities. As people move to the cities, the cities grow. People build houses and businesses on land that was once used for farming. Then the land can no longer be used to grow crops. This makes it hard for China to grow enough food for its people.

The government was not sure there was enough food to feed people in the growing cities. So lawmakers tried to keep the cities from growing. The government even made a law to control population growth. The law said that most families living in cities should only have one child. Parents who have more than one child would have to pay a fine.

Choose the correct answers.

1.       This passage is mostly about ___________

a.       the differences between China and the United States.

b.       the size of China's population and where people live.

c.       laws in China about the population.

d.      why it's hard to have children in cities.

2.       According to the passage, China's population is ____________

a. about equal to the U.S. population

a.       about half of the U.S. population

b.      about four times larger than the U.S. population

c.       only a tiny bit more than the U.S. population

3.       Why does the author use the bar graph?

a. To compare whether China or the U.S. is a better country

a.       To show that China is smaller than the U.S

b.      To help the reader compare the populations of China and the U.S

c.       To prove that China's population has grown dramatically.

4.      Based on information in this passage, it can be concluded that ____________

a.      it would be better if people only lived in city areas.

b.      many Chinese people want to move to other countries.

c.       there is enough land in China to grow food for everyone.

d.      the Chinese government is worried about the population growth.

5.      Which of the following is NOT true?

a.      China covers roughly the same land area as the United States

b.      All farmland in China was converted into homes.

c.       The government of China was worried about food shortages.

China adopted a one-child policy to control population growth.

1. In Vietnam, there are _______________  motorbikes today than 10 years ago

2.       There were ____________  cars on the roads twenty years ago.

3.       Small towns have ___________  traffic and pollution than big cities.

4.       China is still the most populated, but India will have ________________  people than China by 2022.

5.       Because there is ____________  crime in the countryside, crime is not a problem for people living

V.  Fill in each blank with the correct word: more, fewer or less.

31. The weather in winter is worse than that in summer. People get  colds in summer than in winter.

32. The new law limits smoking in public. There are               places where people can smoke.

33. We are lucky. We work                                         hours than any workers.

34. This factory has                              workers than any workers.

35. Farmers have                                              time off than workers. Farmers work harder than workers.

36. There are                            cars in the streets at this time. The traffic is so heavy.

37. Class 7A has 42 students, and Class B has only 38 students. Class 7A has                                 students than Class 7B.

38. Lan has                                           homework than Hoa.

39.                               fruits are now in season in the south. There are plenty of fruits now.

40. I think we don’t have many publish holidays. We ought to have                        .

III  Find the word which does not belong to each group.

      1.   A. automatic                B. manned                   C. driverless                D. pilotless

      2.   A. pedal                       B. driver                       C. sail                          D. ride

      3.   A. boat                         B. sailor                       C. UFO                        D. train

      4.   A. submarine               B. ocean                      C. taxi                          D. underwater

      5.   A. plane                       B. helicopter                C. cars                         D. flying

Cho bt: M=3x-2

a) Tìm gt của biến x để M=0

b) Cho bt: A=( x^2 - 3x ) - (3x - 9 ) +5

Cm A luôn dương với mọi gt của biến x

cmr: A= (x-1)^2022 +3 luôn có gt dương với mọi gt của x

chứng minh rằng : nếu x - y + z =0 thì xy + yz + xz luôn không âm