单选题:By referring to the artificial grammar, the author intends t

题目内容:
By referring to the artificial grammar, the author intends to show __________. A.its significance in the study
B.an inherent pattern being learnt
C.its resemblance to the lights
D.the importance of a night' s sleep

参考答案:
答案解析:

高级程序设计语言的特点是(  )。

高级程序设计语言的特点是(  )。 A.高级语言数据结构丰富 A.高级语言数据结构丰富 B.高级语言与具体的机器结构密切相关 B.高级语言与具体的机器结构密切相

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设有表示学生选课的三张表,学生S(学号,姓名,性别,年龄,身份证号),课程C(课号,课名),选课SC(学号,课号,成绩)

设有表示学生选课的三张表,学生S(学号,姓名,性别,年龄,身份证号),课程C(课号,课名),选课SC(学号,课号,成绩),则表SC的关键字(键或码)为(  )。

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According to the speaker, why do pesticides pose a threat to

According to the speaker, why do pesticides pose a threat to amphibians?A.Pestic

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leads the country in the manufacture of aircraft and spare p

leads the country in the manufacture of aircraft and spare parts?75.__________

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