一瓶饮料连瓶的质量是850克,喝了一半,连瓶的质量是500克,瓶中原来装了多少克饮料?
(850-500)×2,
=350×2,
=700(克);
答:瓶中原来装了700克饮料.
It's over _____ from my home to school. It's very near. [ ]
A. ten minutes' walk
B. ten minute's walk
C. ten minutes' walks
D. ten minutes walk
下列药物中,"使血小板功能抑制。对血小板中环氧酶的抑制是不可逆的,只有当新的血小板进入血液循环才能恢复"属于()
A.华法林
B.尿激酶
C.双香豆素
D.双嘧达莫(潘生丁)
E.阿司匹林(乙酰水杨酸)