Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 38 to 42.

Our eyes and ears might be called transformers because they send the light and sound around us and turn them into electrical impulses that the brain can interpret. These electrical impulses that have been transformed by the eyes and ears reach the brain and are turned into massages that we can interpret. For the eye, the process begins as the eye admits light waves, bends them at the cornea and lens, and then focuses them on the retina. At the back of each eye, nerve fibers bundle together to form optic nerves, which join and then split into optic tracts. Some of the fibers cross so that part of the input from the right visual field goes into the left side of the brain, and vice versa. The process in the ear is carried out through sensory cells that are carried in fluid-filled canals and that are extremely sensitive to vibration. Sound that is transformed into electricity travels along nerve fibers in the auditory nerve. These fibers form a synapse with neurons that carry the massages to the auditory cortex on each side of the brain.

According to the passage, when input from the right visual field goes into the left side of the brain, what happens?

A. The nerve fibers bundle together. 

B. The optic nerves split.

C. The retina receives light waves.    

D. Input from the left field goes to the right side.

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 25 to 29.

Polar bears are in danger of dying out. Unlike 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 reduced in size (25)_________ about 30 per cent. The temperature in the Arctic has slowly been rising and this is (26)_________ the sea ice to melt, endangering the polar bears' home. The polar bears' main sources of food are the different types of seals found in the Arctic. They catch them by waiting next to the air holes seals have made in the ice. (27)_________ the bears are very strong swimmers, they could never catch seals in water. This means that the bears really do rely on the ice to hunt.

Polar bears also need sea ice to travel. They can cover a huge territory and often swim from one part of the ice to another. They have been (28)_________ to swim up to 100 km, but when there is less ice, they may have to swim further and this can (29)_________ fatal to the bears. A number of bears have drown in the last few years and scientists believe that it is because they were not able to reach more ice before they became too tired and couldn't swim any further.

Điền vào ô trống 25

A. in

B. by

C. within

D. for

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

You________plenty of time in case the bus__________; otherwise, you’ll risk missing your ferry.

A. must have allowed - delays

B. ought to be allowed - has delayed 

C. had better allow - is delayed

D. were allowed - was delayed

Cho chất X có công thức Tên thay thế của X là

A. 3-etyl-2-metylbutan-1-al

B. 2,3-đimetylpentan-1-al

C. 2-etyl-3-metylbutan-4-al

D. 1,2-đimetylpentan-1-al

did..................do

\(\frac{1}{2\left(x+1\right)}\)\(-\frac{1}{3\left(5-x\right)}=2\)

\(\frac{1}{2}-\frac{1}{x+1}-\frac{1}{3}-\frac{1}{5-x}\)\(=2\)

Kết luận đúng về phenol là:

A. Phenol được dùng để sản xuất chất diệt nấm mốc, thuốc diệt cỏ, thuốc nổ, phẩm nhuộm

B. Đun nóng phenol với H₂SO₄ đặc ở 140^oC ta thu được điphenylete (C₆H₅−O−C₆H₅)

C. Phenol là chất lỏng không màu, tan tốt trong nước lạnh

D. Dung dịch phenol có tính axit mạnh hơn axit cacbonic (H₂CO₃), làm quì tím hóa đỏ

Do you have a better cooker than this

->Is this the best cooker you have ?