Howarewetodevelopnewtechnologyifwecan’tstudycurrenttechnologytofigureouthowto______it?
A.improve B.rest C.cause D.conceal正确答案A
Howarewetodevelopnewtechnologyifwecan’tstudycurrenttechnologytofigureouthowto______it?
A.improve B.rest C.cause D.conceal正确答案A