题目

Complete the sentences with the given words in their proper forms (用括号中所给单词的适当形式完成下列句子)【1】Here are some _________ about electricity. (story)【2】We live on the _________ floor. (five)【3】I am old enough to go to school by __________. (I)【4】Mr. Wind always shows off his ___________. (strong)【5】My son told me __________, “Although I work hard, I fail in the exam again.” (sad)【6】It is _________ to climb such a high mountain in half an hour. ( possible )如图，在边长为1的小正方形组成的网格中，△ABC的三个顶点均在格点上，请按要求完成下列各题：（1）用签字笔画AD∥BC（D为格点），连接CD．（2）线段AB的长为______