为测定硫酸钠和氯化钠混合物中氯化钠的质量分数，甲、乙两位同学按以下所示的实验步骤进行实验：称

henzhen. Prices range _______$ 119_______$ 199, depending on the particular configuration （）. Du Pont Company has always been committed ________ protecting the safety and health of employees. This new regulations shall have positive impact ______ our employee. Simens is proud _____ its innovation and sustainability. This problem will be solved ______ a responsible and timely manner.

ne knows s根据短文内容，用方框中所给词的适当形式填空。每词限用一次。 life, cause, tooth, both, die Everyone knows smoking is bad for our health. People who smoke too much may not live long. Lots of people 96 from smoking each year. Smoking 97 many illnesses. Those who smoke often have bad 98 . A lot of people cough because of smoking. One of the most serious illnesses caused by smoking is lung cancer. Many people suffer from this terrible disease and lose their 99 . Smoking is bad for 100 smokers and non-smokers, especially women and children. Smoking is not good for your health. I hope all smokers can give up smoking for themselves and also for the people around them . Let’s enjoy clean air together. 按要求完成下列任务。 小题1:用方框里所给单词的适当的形式填空，使文章通顺、连贯、合理。（）