题目

下列有关微观粒子的说法中正确的是（ ） A．分子由原子构成B．分子是保持物质化学性质的唯一粒子C．原子中的粒子都不带电D．物质都是由离子构成 答案：B阅读短文，从方框中选择适当的单词填空 (每词限用一次)。 took colorful tickets clean inLiLei had a good time in Changqing Expo garden during the last spring festival vacation. He went there with his family. The workers looked at their ID cards instead of the 【1】. Then let them 【2】.How happy they were! In the garden, they saw many different kinds of 【3】lanters for the first time. They【4】lots of photos with the ones they liked. Next they visited the whole garden for a third time. They found that the garden was still beautiful and 【5】. LiLei likes Changqing Expo garden and he thinks it’s a good place to spend vacation.