2. 职称英语
  3. Longdale and Stern discovered that mitochondria and chloroplasts (i)____ a long,

Longdale and Stern discovered that mitochondria and chloroplasts (i)____ a long,

游客2025-02-20  18
问题 Longdale and Stern discovered that mitochondria and chloroplasts (i)____ a long, identifiable sequence of DNA; such a coincidence could be (ii)____ only by the transfer of DNA between the two systems.
选项 A、manufacture…accomplished
B、reveal…repeated
C、exhibit…determined
D、share…explained
E、maintain…contradicted
答案 D
解析 空格(i)：
- 方程等号：such指示代词，指示代词所指代的内容与前文相同。
- 强词和对应：coincidence指向空格(i)，根据such取同。coincidence的释义是the state of two or more things being the same。空格(i)体现mitochondria(线粒体)和chloroplasts(叶绿体)“共同的”特征。manufacture生产，reveal揭露，exhibit展现，share共享，maintain维持。选项D合适。
空格(ii)：
- 强词和对应：the two system指代mitochondria和chloroplasts，空格(ii)填入一个不改变方向的词。accomplish完成(对)，repeat重复(对)，determine决定(对)，explain解释(对)，contradict反驳(错)。综合空格(i)，答案选D。
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