题目

根据所给汉语或英语首字母写出短文中所缺英语单词的正确形式。Last week, my friends and I talked about the rules in our school. Here are some of our ideas.At our school, we have to wear uniforms every 【小题1】d______. The problem is that all my classmates think the uniforms are 【小题2】丑的______.We think young people should【小题3】l______ smart and so we would like to wear our own clothes. Our teachers believe that if we did that, we would concentrate more on our clothes than our studies. We don’t【小题4】同意________.We would feel more comfor下表是元素周期表的前三周期主族和0族元素区，表中虚线处为ⅡA、ⅢA族的连接处，请用相应的化学用语回答下列问题：（1）写由仅由e形成的两种带有相同电荷数的阴离子的符号O2-O2-、O22-O22-．（2）d元素名称为氮氮，其双原子分子的电子式为．（3）图Ⅰ是表示第三周期8种元素单质的熔点（℃）柱形图，已知柱形“1”代表Ar，则其中柱形“8”代表的是（填化学式）SiSi晶体，1mol该晶体中含有22mol化学键．（4）b、c、d、e、f的氢化物的沸点（℃）直角坐标图（图Ⅱ）中序列“5”的氢化物的名称是甲烷甲烷，空间构型为正四面体正四面体；序列“2”的氢化物的结构式是H-O-HH-O-H，属于极性极性（填“极性”或“非极性”）分子．