.The possible benefits of cloning are numerous , for producing human tissues and organs for transplant, and for preserving endangered animal species to name but two.
A. artificially
B. materially
C. scientifically
D. medically
网友回答
(答案→)A. artificially
B. materially
C. scientifically
D. medically
解析：可联系答.案.网客服索取。