StephenHawking的精选

问题详情：StephenHawking,       “thegreatestgeniusofthelate20thcentury”,announcedthattherearereallygreyholesintheuniverse.   A.calling        B.tocall    C.tobecalled   D.call...

问题详情： StephenHawking,       “thegreatestgeniusofthelate20thcentury”,announcedthattherearereallygreyholesintheuniverse.        A.calling             B.tocall     ...