Q39:
Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in
parallel lines, in birds the tubes form a random pattern.

A. Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes

B. Whereas the tiny tubes for the conveying of nutrients to bone cells are arrayed in mammals in parallel lines, birds have tubes that

C. Unlike mammals, where the tiny tubes for conveying nutrients to bone cells are arrayed in parallel lines, birds’ tubes

D. Unlike mammals, in whom the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, the tubes in birds

E. Unlike the tiny tubes that convey nutrients to bone cells, which in mammals are

arrayed in parallel lines, in birds the tubes

Answer: A

问Whereas用法

与As一致?吗