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题目内容双击单词支持查询和收藏哦～
The macromolecule RNA is common to all living beings, and DNA, which is found in all organisms except some bacteria, is almost as _____.
- A.mercurial
- B.amorphous
- C.ubiquitous
- D.manifest
- E.exiguous
C显示答案
以上解析由 考满分老师提供。
