下列关于沙眼衣原体说法正确的是

A．天然宿主仅为人类
B．传染来源为人→人，鼠→人，鼠→鼠
C．包涵体内不含糖原，碘液染色呈阴性
D．原体中有质粒DNA
E．青霉素对其无抑制作用

After splicing an eye in a piece of wire rope，the splice should be parceled and served to（）.

A.strengthen the line

B.increase its efficiency

C.prevent hand injury by covering loose ends

D.make the line more flexible