Genetic Engineering
Many people are unaware (1) 1 a lot of the foods they eat every day, (2) 2 bread, ham and cheese, have been altered by using new technology. Food can be changed. It can be made to taste (3) 3 or to look different – carrots can be made to taste of chocolate and apples can be made redder. Some food that appears the same has been (4) 4 improved, for example, fish can be made to grow faster. Should we be pleased or worried? Will new technology bring benefits, or is it about to go (5) 5 control?
Genetically engineered foods are produced by taking genetic material from one species and transferring it (6) 6 another. For example, an ‘antifreeze’ gene which appears naturally in Arctic fish has been introduced into tomatoes and strawberries (7) 7 they don’t freeze in cold weather; a human gene has been introduced into pigs to make them (8) 8 more quickly.
Some claim great advantages. They point out that crops can be made stronger and more disease resistant, (9) 9 pesticides can be reduced. They also maintain that food can be made more nutritious or that the fat content can (10) 10 to make it healthier.
A. that B. what C. for D. of
2. A. such that B. such as C. so that D. so as
3. A. difference B. differently C. different D. differing
4. A. scientifically B. science C. scientific D. scientifical
5. A. under B. into C. out D. out of
6. A. for B. to C. out D. into
7. A. such that B. in order to C. so that D. so as to
8. A. grow B. to grow C. growing D. grown
9. A. because B. cause C. result D. so
10. A. be reducing B. be reduced C. reduced D. reducing
完形填空题 (30 分) 30 分
|
