【单选题】The only thing I wanted was to ( ) from the table and leave this house.
【单选题】不等长双曲柄机构中,当以曲柄的相对杆为机架时,则该铰链四杆机构中存在的曲柄数最多是( )
【单选题】设有关系歌手(歌手号,姓名,最后得分)和关系评分(歌手号,分数,评委号),每个歌手的最后得分是所有评委给出得分的平均值,则计算歌手"最后得分"的SQL 语句是_______。
A.
UPDATE 歌手 SET 最后得分=(SELECT AVG(分数) FROM 评分 WHERE 歌手号=歌手.歌手号)
B.
UPDATE 歌手 SET 最后得分=EXISTS(SELECT AVG(分数) FROM 评分 WHERE 歌手号=歌手.歌手号)
C.
UPDATE 歌手 SET 最后得分=(SELECT AVG(分数) FROM 评分 GROUP BY 评委号)
D.
UPDATE 歌手 SET 最后得分=( SELECT AVG (分数) FROM 评分)
【简答题】The only thing I remembered was that I was walking down the street, when I saw my friend George approaching.
【简答题】六一歌手大奖赛有407人参加,女歌手未获奖人数占女歌手总数的 1 9 ,男歌手16人未获奖,而获奖男女歌手人数一样多,问:参赛的男歌手共几人?
【单选题】听力原文:M: Are you having much trouble with the course? W: Not really. The only thing I haven't understood so far is the reading we had last night. Q: How is the woman doing in the course? (17)
A.
She hasn't been doing much of the reading.
B.
She understood the reading last night.
C.
She isn't having much trouble.
D.
She understands very little.