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【单选题】
取甘草粉末少许置白瓷板上，加80%H2SO4 溶液数滴显黄色，渐变为橙黄色，这是检测A.
甘草苷
B.
异甘草苷
C.
甘草
D.
甘草新木脂素
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【多选题】Announcers on China Central Television (CCTV) will need to do some fast talking to replace the popular English acronyms(首字母缩略词) they’re now forbidden to use. Shanghai Daily reports that “anchors at Ch...
A.
speak as slowly as they like
B.
mix English into Chinese
C.
use shortened Chinese expressions
D.
have so much time for their program
【简答题】Customers are tired of the __________________ (stereotype), fast-talking salesperson.
【简答题】/5、如何稀释浓硫酸?
【简答题】阅读理解。 Announcers on China Central Television (CCTV) will need to do some fast talking to replace the popular English acronyms (首字母缩略词) they're now forbidden to use. Shanghai Daily reports that 'anchor...
【简答题】(12 分)右图是稀释浓硫酸实验的示意图。 ( 1)写出图中a、b两种仪器的名称: a , b 。 ( 2)b容器所盛的试剂是 (填 “水”或“浓硫酸”)。 ( 3)稀释时,若两种试剂添加顺序颠倒,将会发生 ( 4)在稀释浓硫酸过程中仪器a要 不断 。将浓硫酸滴在纸张、木材等物质上,能使其碳化,说明浓硫酸具有 性 。 ( 5)如果不慎有少量的浓硫酸沾到皮肤或衣服上应如何处理:
【单选题】Cusomers are tried of the ________ , fast-talking salesperson.
A.
stereotypical
B.
practical
C.
untypical
D.
cynical
【单选题】What are the two speakers talking about?
A.
A house to buy.
B.
A holiday plan.
C.
A well-paid job.
【单选题】This passage is mainly talking about______.
A.
the fast expanding of social networking sites
B.
the popularity of smartphones and social networks
C.
the development and advantages of tablet computers
D.
the fierce competition in the operating system industry
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