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【多选题】
间接碘量法中,有关注意事项下列说法正确的是()A.
氧化反应碘量瓶中密闭进行,并注意暗置避光
B.
滴定时,溶液酸度控制为碱性,避免酸性条件下I-被空气中氧所氧化
C.
滴定时应注意避免I2的挥发损失,应轻摇快滴
D.
淀粉指示剂应在近终点时加入,避免较多地I2被淀粉吸附,影响测定结果的准确度
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【简答题】I can things with a clear conscience. I did everything I could.
【单选题】With Mr. Wang helping us, I do believe I can learn English well. With still so many things ____, I cannot go on holiday with you
A.
dealt with
B.
to deal with
C.
dealing with
D.
deal with
【单选题】I can not go shopping with you because I have________things to do. [ ]
A.
a couple of
B.
the couple of
C.
couples of
D.
a couple
【单选题】Cre a tivity True creativity is the ab i lity to take something existing and create something new. 3 . There are a dozen different things you can do with them. Experimenting with ...
A.
Encourage kids to cook with you.
B.
And we can’t forget science education.
C.
We can give kids chances to think about materials in new ways.
D.
So how can we help our kids prepare for jobs that don’t yet exist?
E.
Gardening is another great activity for helping kids develop this skill.
F.
We can do this in real life or ask questions about characters in stories.
G.
Being able to communicate ideas in a meaningful way is a valuable skill.
【简答题】Look at the picture. What can you see? In the picture there is a big table with a lot of things on it. There are three bottles of orange juice, two glasses of milk, some bread, cakes and so on. look, ...
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