题目

请认真阅读下面短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。 注意：每空格只填1个单词。 People who have unusual difficulty with reading, writing, or listening might have a learning disability. People may know about a reading disorder, dyslexia (诵读困难). Today we discuss a writing disorder, dysgraphia. Writing is not an easy skill. Not only does it require the ability to organize and express ideas in the mind. It also requires the ability to get the muscles in the hands and fingers to form those ideas, letter by letter, 电压是我们生活中经常遇到的一个词，请回答下列问题（1）一节干电池的电压为1.5V1.5V  （2）家庭电路的电压为220V220V  （3）对人的安全电压为不高于36V不高于36V．