______ from other continents for millions of years, Australia has many plants and animals

not found in any other country in the world.[ ]

A. Being separated

B. Having separated

C. Having been separated

D. To be separated

青蒿素抗疟原虫的主要机制是（）

A.激动α受体

B.抑制心肌Na⁺内流

C.干扰表膜--线粒体功能，阻断以宿主红细胞浆为营养供给，影响疟原虫的膜结构

D.激动β受体

E.激动M受体