题目

根据表中信息，判断以下叙述正确的是 （  ） A. 氢化物的稳定性为H2T＜H2R    B. 单质与稀盐酸反应的速率为L＞Q C. L与M的最高价氧化物的水化物的碱性L＜M    D. L2+ 与R2- 的核外电子数相等 答案：B单词拼写（共10小题；每小题1分，满分10分） 1.Be _________ (谨慎) about the possible dangers. 2.I must a________ for not being able to meet you at the airport on time. 3.You can’t fully __________ (欣赏) foreign literature in translation. 4.Teachers must take r_________ for the students. 5.she seemed totally __________ (专注于)in her book and didn’t notice my coming. 6.If you want to pass your exams, you’d better change your a__________ towards study. 7.There’s no ________ (争辩) that we also have a problem with population. 8.Maybe I should tell them, so they won’t b_________ me for keeping a secret. 9. I want to be an ________ (环境的)consultant after graduation. 10. Every student is welcome to our club, r_________ of class, grade or age.