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【单选题】
在Access中，下面关于空值Null叙述错误的是（ ）。A.
尚未存储数据的字段的值
B.
空值是默认值
C.
查找空值的方法与查找空字符串相似
D.
空值的长度为零
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举一反三
【单选题】Sam often ____ his room on Sundays. Look! He ______it now. [ ]
A.
cleans; cleans
B.
cleans; is cleaning
C.
is cleaning; cleans
D.
is cleaning; is cleaning
【简答题】Mr. Chen lost a lot of money in his business.__________. [A] So did he [B] So he did [C] So was he [D] So he was
【单选题】Tom _ _ his room every day. He it now.
A.
cleans, clean
B.
cleans, cleaning
C.
cleans, is cleaning
D.
clean, is cleaning
【简答题】学校打算成立一个奖学金，每年发放一次，奖励给学校学习最好的一名学生５００００元，奖学金的基金保存在银行，银行一年的定期存款利率为 ２％。问学校要投资多少钱作为奖励基金?
【单选题】_______all his efforts he failed, he was so upset about himself that he felt like crying.
A.
So long as
B.
In terms of
C.
In spite of
D.
regardless of
【简答题】I hope the weather by this afternoon,because we want to go out.A．cleans upB．cleans outC．clears upD．I hope the weather____ by this afternoon,because we want to go out. A．cleans up B．cleans out C．clear...
【简答题】He returned to his hometwon so that he could indulge his passion for football. A) develop B) enjoy C) break D) limit
【单选题】－David has made up his mind to continue with his studies. －_______ and _______.
A.
So he has; so have I
B.
So has he; so have I
C.
So he has; so I have
D.
So has he; so I have
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