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问题 单项选择题

《始得西山宴游记》一文先写登西山之前的游览情形，这种表现方法是（）。

A、对比

B、类比

C、铺垫

D、侧写

答案

参考答案：C

填空题
从方框中选择合适的词，将句子补充完整，每词限用一次。       
noodles,tomato，orange juice，size，medium
1. What_____bowl of rice would he like?
2. They don't have green tea,but they have_____.
3. What kind of_____would you like,Tom?
4. Mary would like a_____bowl of noodles.
5. I'd like mutton and_____noodles.I think they are very delicious.
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单项选择题

题中假定学生关系是S(S#,SN.,SEX,AGE)，课程关系是C(C#,CNAME,TEACH-ER)，学生选课关系是SC(S#,C#,GRADE)。

检索选修课程"C2”的学生中成绩最高的学生的学号，正确的SELECT语句是______。

A．SELECT S# FORM SC
WHERE C#="C2"AND GRADE＞=(SELECT GRADE FORM SC
WHERE C#="C2")

B．SELECT S# FORM SC
WHERE C#="C2"AND GRADE IN(SELECT GRADE FORM S

C．
WHERE C#="C2"C) SELECT S# FORM SC
WHERE C#="C2"AND GRADE NOT IN(SELECT GRADE FORM SC
WHERE C#="C2")

D．SELECT S# FORM SC
WHERE C#="C2"AND GRADE＞=ALL(SELECT GRADE FORM SC
WHERE C#="C2")
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