GRE Text Completion: JiJing 1373-GRE填空机经1373题 - QV4D2N1VXJ5R7OGZA

A bird's feathers would seem to be a (i)____________ design for protecting a bird from attack by microscopic organisms. They create a warm, moist space next to the skin that could be an ideal incubator for spores. Wild birds rarely (ii)____________ skin diseases, however. The chemicals in the sebum include an array of antibacterial and antifungal agents that allow the bird's skin to (iii)____________. A. perfect B. contract C. stay healthy D. typical E. overcome F. become irritated G. poor H. notice I. recover quickly