问题 问答题 计算题

气相色谱法测定环境空气和废气中二硫化碳时,某样品采样体积为2L样品用六通阀进样1.00m1,得到峰高37.84Pa。已知浓度为35.6mg/m3的二硫化碳标准气体进样1.00m1时,峰高为29.52Pa,试求该样品中二硫化碳的浓度。

答案

参考答案:

(37.84×35.6×1.00)/(29.52×1.00)=45.6(mg/3

完形填空

Susan Boyle is a very        singer all over the world. She is 49 years old. Before she         famous, she was poor. She had        job and she was living alone in a small town in England. She looked shy(害羞)and didn’t dress       .

All these things changed after she came to a big show in Britain. In the show, people could show      special talents(才能).       , when she said she wanted to be famous as a singer, everyone laughed at her. But when she opened her mouth and began singing, all the people        laughing. Her voice was so wonderful that everyone lost themselves in it.

Now Susan has too many       . She is loved by everyone and she even took a trip to America. At the airport,        her fans from different places went to meet her and       , “We love Susan.”

小题1:A.popular             B.nice                 C.interesting

小题2:A.turned              B.became               C.got

小题3:A.an                  B.some                 C.no

小题4:A.good                B.well                 C.beautiful

小题5:A.they                B.theirs                  C.their

小题6:A.At first                B.At last              C.In the end

小题7:A.began               B.stopped              C.liked

小题8:A.fans                B.students             C.teammates

小题9:A.2 thousands         B.thousands of         C.a lot

小题10:A.said               B.talked               C.shouted

单项选择题 A1/A2型题