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【单选题】
空心阴极灯的构造是A.
待测元素作阴极，钨棒作阳极，内充氮气；
B.
待测元素作阳极，钨棒作阴极，内充氩气；
C.
待测元素作阴极，钨棒作阳极，灯内抽真空；
D.
待测元素作阴极，钨棒作阳极，内充惰性气体。
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【简答题】For the speeches with scripts, can the interpreters just be focused on the scripts? Why?
【单选题】It is evident, based on bone and shell scripts. that the primitive forms of Chinese characters must have been created about _______ years ago.
A.
3,000
B.
5,000
C.
4,000
D.
2,000
【简答题】There are seven mainly used scripts of Chinese calligraphy: bone and shell script, bronze script, ________, ________, __________, the running style, and the grass style.
【简答题】The bone and shell scripts became a link between earlier _________ and the complex writing system of today, where Chinese characters developed from _______ to more abstract and sophisticated forms.
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