2. 职称英语
  3. Since chromosome damage may be caused by viral infections, medical X-rays, and e

Since chromosome damage may be caused by viral infections, medical X-rays, and e

游客2025-02-25  48
问题 Since chromosome damage may be caused by viral infections, medical X-rays, and exposure to sunlight, it is important that the chromosomes of a population to be tested for chemically induced damage be compared with those of a control population.
选项 A、to be tested for chemically induced damage be compared with
B、being tested for damage induced chemically are compared with
C、being tested for chemically induced damage should be compared to
D、being tested for chemically induced damage are to be compared to
E、that is to be tested for chemically induced damage are to be comparable with
答案 A
解析 根据上述原则，发现含有动词原形的选项仅有A，其余宾语从句中的谓语动词都未用原形。但若忘记了此原则，我们仍可以迅速判断出答案B中damage的修饰放在后面是不符合表达习惯的，C、D中的compared to改变了原句compare with的原意，E中的that从句取代原句的动词不定式作修饰，不够简洁，同时谓语用be to be comparable with过于笨拙、重复，没有be compared with简洁。因而同样可选A(A中的a population之后的动词不定式作chromosomes的定语)。
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