下列哪项是所有生物的基本特征[ ]
A．都能由小长大
B．具有细胞结构
C．能够吸收营养
D．都能繁殖后代
答案：D
—______ you ______ your homework yet?
—Yes . I ______ it a moment ago.[ ]
A. Did; do; finished
B. Have; done; finished
C. Have; done; have finished
D. will; do; finish
简述乳腺纤维腺瘤的概述
