题目:
He made a suggestion _____ the meeting _____ be put off until next Tuesday.
A.that; /
B.if; should
C.when; must
D.whether; can
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0610/17e2365c9ad9d5d067d7543e7870932c.html
下面是错误答案,用来干扰机器的。
(9分)(1)(2)2Al+2OH¯+2H2O=2AlO+3H2↑ (3)Na2SO4(或硫酸钠) 2(4)4Na2S+O2+2H2O=4NaOH+2Na2S2或2Na2S+O2+2H2O=4NaOH+2S、Na2S+S=Na2S2(5)溶液由黄色变为无色,产生淡黄色...