题目

熔喷布是医用口罩最核心的材料，其以聚丙烯为主要原料制成。熔喷布的纤维直径非常小，空隙多、结构蓬松，具有很好的透气性、过滤性和屏蔽性。下列说法正确的是（ ）A.一次性医用口罩的质量大约为3mgB.制造熔喷布时，聚丙烯熔化后质量变小C.经过处理的熔喷布带有大量静电，利用静电的吸附作用能提高防护效果D.口罩的鼻梁条多为一根细的金属条，这利用了金属弹性好的特点Passage 5(2013 汕头潮南)      阅读下面短文，并借助上下文和插图补充所缺信息。每个空格只能写一个形式正确、意义相符的单词。      One day, when my dad and I were driving to the shop, I 1       out of the window. I saw an old man 2       at the street corner. 3       was a rose in his hand,and he was smelling the rose. For some reason,our eyes met and we looked at each other for about twenty seconds.There was nothing unusual about the man but the meet was 4        for me.Up to that moment in my life,I had given no thought to anyone on the street,in shops,or anywhere 5       .1 had no interest except my family.      But I was interested in that old man.For the first time I was interested in a 6       . What kind of life did he have? Did he have any relatives?      Once a great man encouraged us to “stop and smell the rose”. Now 1 want to 7        these words to you.Stop 8       you are busy with and try to fully understand things and people 9        your eyes. 10       you don't care about others on your road of life,you will miss your life itself.Do you think so?1.       2.       3.       4.       5.       6.       7.       8.       9.       10.