Fill the missing words in the blanks according to the Chinese Version.vMost kindergarten teachers are _______ of the developmental characteristics and _______ math skills that kindergarteners need to have. They are also ____ ___ the best ways to teach the little ones and the levels of _______ that they can be exposed to. But there are also many ways in which the little kids use math in their everyday lives. Parents can ______ _ on these to make the subject easy to understand and _______. Simple math ___ ____, worksheets, problems and _______ make the subject a whole lot of fun! Parents can sit with their kindergarteners and _______ them through each activity, encouraging them and pointing out the _______ that they make. Math is sure to soon become their favorite subject!v大多数幼儿园教师了解幼儿具备的发展特点以及需要掌握的数学能力。他们会用最好的方法来教导幼儿以及他们会遇到的不同困难。但也有许多方法,使孩子们在日常生活中使用数学。家长可以利用这些方法使数学易于理解和把握。简单的活动,工作,问题和游戏会使数学更有乐趣!家长可以和幼儿坐在一起,引导他们通过每一个活动,鼓励他们并指出错误。数学一定会很快成为他们最喜欢的科目!
与火焰原子化吸收法相比,石墨炉原子化吸收法:
A. 基体效应大但重现性好
B. 灵敏度高且重现性好
C. 样品量大但检出限低
D. 原子化效率高,绝对检出限低
原子吸收分光光度分析法中,光源辐射的待测元素的特征谱线的光,通过样品蒸气时,被蒸气中待测元素的( )吸收
A. 基态原子
B. 基态分子
C. 离子
D. 激发态原子
在原子吸收分析中,如怀疑存在化学干扰,采取哪种措施进行补救是不适当的
A. 提高火焰温度
B. 改变光谱通带
C. 加入释放剂
D. 加入保护剂