Scientists are now researching new measures to prevent levels from rising.




A.pollute
B.polluted
C.polluting
D.pollution

Các câu hỏi liên quan

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 1 to 10.
The texting pigeons
Not everybody recognizes the benefits of new developments in communications technology. Indeed, some people fear that text messaging may actually be having a negative (1)_____ on young people's communication and language skills, especially when we hear that primary school children may be at (2)______ of becoming addicted to the habit. So widespread has texting become, however, that even pigeons have started doing it. (3) _____, in this case, it's difficult to view the results as anything but positive.

Twenty of the birds are about to (4) ______ to the skies with the task of measuring air pollution, each (5) _____ with sensor equipment and a mobile phone. The (6) _____ made by the sensors will be automatically (7) _____ into text messages and beamed to the Internet - where they will appear on a dedicated 'pigeon blog'.

The birds will also each have a GPS receiver and a camera to capture aerial photos, and researchers are building a tiny 'pigeon kit' containing all these (8)_____. Each bird will carry these in a miniature backpack, (9) _____ , that is, from the camera, which will hang around its neck.
The data the pigeons text will be displayed in the (10) _____of an interactive map, which will provide local residents with up-to-the-minute information on their local air quality.
__________




A.armed
B.loaded
C.granted
D.stocked

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 36 to 42.
Whales are the largest animals in the world, and the gentlest creatures we know. Although the whale is very huge, it is not hindered at all by its size when it is in the water. Whales have tails that end like flippers. With just a gentle flick, it can propel itself forward. The skin of a whale is so smooth that it does not create any friction that can slow the whale down. A whale’s breathing hole is located on the top of its head, so it can breathe without having to completely push its head out of the water. Whales are protected from the cold seawater by body fat that is called blubber.
Whales live in the ocean but, in terms of behaviours, they are more similar to humans than fish. They live in family groups and they even travel in groups when they have to migrate from cooler to warmer waters. The young stay with their parents for as long as fifteen years. Whales are known not to desert the ill or injured members; instead, they cradle them.
When whales are in danger, there are people who go to great lengths to help them. One such case occurred in 1988, when three young whales were trapped in the sea. It was close to winter and the sea had begun to freeze over. Whales are mammals that require oxygen from the air, so the frozen ice was a great danger to them. All they had then was a tiny hole in the ice for them to breathe through. Volunteers from all over soon turned up to help these creatures. They cut holes in the ice to provide more breathing holes for the whales. These holes would also serve as guides for the whales so that they could swim to warmer waters.
(Adapted from http://www.englishdaily626.com?reading_comprehension)
Which of the following best describes the main idea of this passage?




A.Successful attempts to rescue whales all over the world
B.Some remarkable similarities of whales to humans
C.Whales as the largest, gentlest but vulnerable creatures
D.Whales as the only animals to live in warm water