So sánh hai phân số:

9 7   v à   9 8

Cho sơ đồ sau :  

Công thức cấu tạo của X là

A. CH=CH₂COOCH=CH₂

B. CH₂=C(CH₃)COOC₂H₅

C. C₆H₅COOC₂H₅

D. C₂H₃COOC­₃H₇

Cho hàm số y = f(x) xác định, liên tục trên ℝ  và có đồ thị như hình vẽ bên. Khẳng định nào sau đây là sai?

A. Hàm số đồng biến trên  1 ; + ∞

B. Hàm số đồng biến trên  - ∞ ; - 1  và  1 ; + ∞

C. Hàm số nghịch biến trên khoảng (-1;1)

D. Hàm số đồng biến trên  - ∞ ; - 1 ∪ 1 ; + ∞

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 45 to 54.

POLAR BEARS

Polar bears are in danger of dying out. (45) _________ some other endangered animals, it’s not hunters that are the problem, it’s climate change. Since 1979, the ice cap at the Arctic Circle where the polar bears live has (46) _________ in size by about 30 percent. The temperature in the Arctic has slowly been (47) _________ and this is (48) _________ the sea ice to melt, endangering the polar bears’ home.

The polar bears’ main (49) _________ of food are the different types of seal found in the Arctic. They catch them by waiting next to the air holes the seals have (50) _________in the ice. (51) _________ the bears are very strong swimmers, they could never catch seals in the water. This means that the bears (52) _________ do rely on the ice to hunt.

Polar bears also need sea ice to travel. They can (53) _________ a huge territory and often swim from one part of the ice to another. They have been known to swim up to 100km, but when there is less ice, they may have to swim further and this can (54) _________ fatal to the bears. A number of bears have drowned in the last few years and scientists believe that it is because they were not able to reach more sea ice before they became too tired and couldn’t swim any further.

Điền vào ô 52

A. really

B. properly

C. surely

D. fully

I/ Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions.

A. diploma

B.financial

C. devastate

D. procedure

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

She got the job _________ the fact that she had very little experience.

A. although

B. because of

C. despite

D. because

Read the following passage and choose the correct word or phrase that best fits each of the numbered blanks. Fill in the appropriate word in question 33

The warming of the Pacific Ocean has created weather patterns (31)__________ strongly affect the  worlD. When the water is warm, the (32)__________ of rainfall in Indonesia and the surrounding regions decreases. Australia could even experience a drought in many parts. On the other hand, Chile (which borders the Pacific Ocean) is preparing for severe rainstorms. In Pakistan and northwestern India, the weather pattern makes the rainy season weaker and makes the area much drier. This happening is called El Nino and is used by weather forecasters to make long-range weather predictions. They also know that El Nino will (33)__________  unusually heavy rains to the southwestern part of the United States and make the central part of the country drier at the same time. According to research, weather forecasters (used to know about the coming weather with certainty. Now everything has become (34)__________  different. El Nino itself used to be (35)__________ . It would occur every two to seven years. But now, this weather pattern is becoming more frequent. We cannot say when and how often tornadoes or cyclones occur. Scientists are unsure of the reason for this change on a global scale either.

A. fetch

B. bring

C. take

D. carry