【单选题】【消耗次数：1】
He doesn’ t spend much time____ his homework.
①
in
②
do
③
on
④
to do
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相关题目
【单选题】
In order to prepare a lecture, one must do a lot of research
and spend plenty of time____ his material so that his speech
is clear and easy to follow.
①
organizing
②
managing
③
operating
④
breeding
【单选题】
He will surely finish the job on time _______ he is left to do it in his own way.
①
in that
②
in case
③
as far as
④
so long as
【单选题】
_______ the look on his face, he doesn’t t quite understand what the speaker is saying.
①
Judge by
②
Judging by
③
To judge by
④
To be judged by
【单选题】
Isn’t it about the time you __________ to do morning exercises?
①
began
②
begin
③
should begin
④
have begun
【单选题】
Sandy could do nothing but _______ to his teacher that he was wrong.
①
admit
②
admitted
③
admitting
④
to admit
【单选题】
—The red dress fits me very much, doesn’t it?— .
①
Yes, it does.
②
You looks very beautiful.
③
It is a little tight.
④
wonderful
【单选题】
He didn’t keep on asking me the time any longer as he had had his watch ____.?
①
repaired ?
②
to repair ?
③
repairing ?
④
repair?
【单选题】
—Do you have much experience with caring for babies?— .
①
Yes, I do. I am responsible, loving, warm girl, and often take care of kids in my free time.
②
No, you are freshmen. You should work hard.
③
Yes, they are. They are very cute.
随机题目
【单选题】
现有学生表和修课表，其结构为：
学生表（学号，姓名，入学日期，毕业日期）
修课表（学号，课程号，考试日期，成绩）
现要求修课表中的考试日期必须在学生表中相应学生的入学日期和毕业日期之间。下列实现方法中，正确的是（ ）。
①
在修课表的考试日期列上定义一个CHECK约束
②
在修课表上建立一个插入和更新操作的触发器
③
在学生表上建立一个插入和更新操作的触发器
④
在修课表的考试日期列上定义一个外键引用约束
【单选题】
下列关于DEFAULT约束的说法，错误的是（ ）。
①
一个DEFAULT约束只能约束表中的一个列
②
在一个表上可以定义多个DEFAULT约束
③
DEFAULT只能定义在列级完整性约束处
④
在列级完整性约束和表级完整性约束处都可以定义DEFAULT约束