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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
8
管理
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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