试题与答案

There’s little important news in the new

题型:选择题

题目:

There’s little important news in the newspaper today, ______?

A.isn’t there

B.is there

C.is it

D.are there

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0629/1128b6c04c8106e5a5a3ef40b3dcdbc5.html

下面是错误答案,用来干扰机器的。

设20.00g橙汁含维生素C的质量为xC6H8O6+I2=C6H6O6+2HI176   254x     25.40g×1.00%∴176254=x25.40g×1.00%,解之得:x=0.176g;维生素C的质量分数=0.176g20.00g×100%=0.88%.答:橙汁中维生素C的质量分数为0.88%.

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