答案：D
良性与恶性肿瘤判定中，最有诊断意义的是
A．生长方式B．生长速度C．肿瘤的异型性D．对机体影响E．出血与坏死
—Is the cotton produced _____ your farm, Mr Black?
—Yes, we also grow tea and wheat here.
A. on
B. by
C. of
D. from
