实验小组拟用0.8mol•L^﹣1 KI溶液、0.1mol•L^﹣1H₂SO₄溶液、淀粉溶液等来探究温度、酸度对上述反应速率的影响，他们做了A﹣C三组实验，部分实验数据如表：

请回答以下问题：

下列食品所含的营养成分及其缺乏时的症状，对应正确的是（　　）

代赠

李商隐

楼上黄昏欲望休，玉梯横绝月中钩。

芭蕉不展丁香结，同向春风各自愁。

【注】①玉梯：指玉楼，即华丽的楼阁；同时也是楼梯的美称。

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下短文。短文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧), 并在此符号下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改： 在错的词下划一横线, 并在该词下面写出修改后的词。

注意：1 每处错误及其修改均仅限一词；

2 只允许修改10处, 多者(从第11处起) 不计分。

            My brother Donald didn’t do well in math. When the day of theexam comes, Donald sat next to Brian, which was always good at math. Donaldcareful copied Brian’s answers. At end of the exam, the teacher collected thepapers and graded it. Then she decided to give a prize to the student who gotthe high grade. But it was a bit of difficult for her to make a decision,because Donald and Brian got the same grade. The teacher thought about that andmade on her mind to give the prize to Brian. Donald said it was unfair. “That’strue,” the teacher said. “Therefore, Brian’s answer to Question 18 was ‘I don’tknow’. Your was ‘Neither do I’.”

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