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.
c waves might (36) _______ to brain cancer. So far, the data are not conclusive. The scientific evidence does not (37) _______ us to say with certainly that mobile phones are categorically (38) _______. On the other hand, current research has not yet (39) _______ clear adverse effect associated with the prolonged use of mobile phones.
Numerous studies are now going (40) _______ in various countries. Some of the results are contradictory but others have shown an association between mobile phone use and cancer. (41) _______, these studies are preliminary and the issue needs further, long - term investigation.
(42) _______ the scientific data is more definite, it is prudent for people to try not to use mobile phone for long (43) _______ of time. Don't think that hands free phones are any safer either. At the moment, research is in fact showing the (44) _______ and they may be just as dangerous. It is also thought that young people (45) _______ bodies are still growing may be at particular risk.Question 42
A. Until
B. When
C. Provide
D. As
Giải bởi qa.haylamdo.com
Đáp án : A
Until = cho tới khi. When = khi. Provide (that) + mệnh đề = miễn là; giả sử như. As + mệnh đề = khi; bởi vì
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is CLOSEST in meaning to the sentence given in each of the following questions
I hope to have the privilege of working with them again
Not until a monkey is several years old ________to exhibit signs of independence from its mother
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
In this era of increased global warming and diminishing fossil fuel supplies, we must begin to put a greater priority on harnessing alternative energy sources. Fortunately, there are a number of readily available, renewable resources that are both cost- effective and earth – friendly. Two such resources are solar power and geothermal power
Solar energy, which reaches the earth through sunlight, is so abundant that it could meet the needs of worldwide energy consumption 6,000 times over. And solar energy is easily harnessed through the use of photovoltaic cells that convert sunlight to electricity. In theUSalone, more than 100, 000 homes are equipped with solar electric systems in the form of solar panels or solar roof tiles. And in other parts of the world, including many developing countries, the use of solar system is growing steadily
Another alternative energy source, which is abundant in specific geographical areas, is geothermal power, which creates energy by tapping heat from below the surface of the earth. Hot water and steam that are trapped in underground pools are pumped to the surface and used to run a generator, which is produces electricity. Geothermal energy is 50, 000 times more abundant than the entire known supply of fossil fuel resources. And as with solar power, the technology needed to utilize geothermal energy is fairly simple. A prime example of effective geothermal use inIceland, a region of high geothermal activity where over 80 percent of private homes are heated by geothermal power.
Solar and geothermal energy are just two of promising renewable alternatives to conventional energy sources. The time is long overdue to invest in the development and use of alternative energy on global scale
According to the passage, why should we consider using alternative energy sources ?
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Yolanda ran over to me and breathless informed the failure of our team.
Many student couldn’t _______, but the teacher _______ the problem by going into a detailed explanation
________for the fact that he was working abroad, he would willingly have helped with the project
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Species like snakes, lizards, coyotes, squirrels, and jack rabbits seems to exist quite happily in the desert
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
In human beings, as in other mammal, hair around the eyes and ears and in the nose prevents dust, insects, and other matter from entering these organs
His aunt bought him some books on astronomy and football, _________ he had any interest in
(After a party at Mary’s house). Bill: ______ Mary: Thanks for your compliment. Good night!
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
When I came back I realized that my camera had been disappeared
Have you told your dad what’s bothering you?I’d ________ in you than my parents.
______ your precious help, I wouldn’t have certainly overcome most of the practical difficulties
