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问题 填空题
多项式3x2y-7x4y2-
1
3
xy3+27是______次______项式．
答案

多项式3x2y-7x4y2-

1
3
xy3+27有四项，最高次项-7x4y2的次数为六．

故答案为：六，四．

单项选择题 A1型题

瘀血所致出血的特点是()

A.出血量多

B.出血不畅

C.出血夹有血块

D.出血伴有疼痛

E.出血量少
查看答案
选择题

Deeply moved by her words, ____________.      .

A．tears came to his eyes

B．he could hardly hold back his tears

C．tears could hardly be held back

D．his eyes were filled with tears
查看答案