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【单选题】
设集合I={1,2,3,4,5,6},集合A、 ,若A中含有3个元素,B中至少含有2个元素,且B中所有数均不小于A中最大的数,则满足条件的集合A、B有(   )
A.
146组       
B.
29组
C.
28组       
D.
16组
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参考答案:
举一反三
【判断题】求函数 的定义域(2,5)。
A.
正确
B.
错误
【单选题】Which of the following does not contribute to the Freshman 15?
A.
underestimating the serving sizes
B.
eating too much junk food
C.
having too much alcoholic drink
D.
they have no time to eat
【简答题】(12分 1,3,5 )已知函数 .   (1)求函数 的定义域. (2)若 是两个模长为2的向量 的夹角,且不等式 对于定义域内的任意实数 恒成立,求 的取值范围.
【单选题】Section C Directions: In this section, you will hear two passages. At the end of each passage, you will hear three questions. Both the passage and the questions will be spoken only once. After you hea...
A.
Many of us are willing to pay more for health food.
B.
Many of us will pay the price for eating too much.
C.
Many of us risk our health eating unhealthy food.
D.
Many of us aren't afraid of gaining a bit of extra fat.
【单选题】Questions 13 to 15 are based on the passage you have just heard.
A.
Salt is quite necessary for people’s health.
B.
Eating too much salt could do harm to the heart.
C.
The quantity of salt varies among different people.
D.
13.People are launching a campaign to eat less salt.
【单选题】passage two questions 13 to 15 are based on the passage you have just heard. 13
A.
salt is quite necessary for people's health
B.
eating too much salt could do harm to the heart
C.
the quantity of salt varies among different people
D.
people are launching a campaign to eat less salt
【简答题】(10分)选修4-5;不等式选讲. 设函数 . (1) 当 时,求函数 的定义域; (2) 若函数 的定义域为 ,试求 的取值范围.
【单选题】求函数的定义域
A.
{x∕x≠3}
B.
{x∕x≥3}
C.
全体实数R
D.
{x∕x 2}
【单选题】Eating too much fat can _____ heart disease and cause high blood pressure.
A.
contribute to
B.
attribute to
C.
attest to
D.
devote to
【单选题】以下关于少数民族服饰历史发展的描述不正确的是
A.
清代各民族服饰已具备各自的特点,且支系间的差异也反应到服饰上。
B.
在新石器时代出现了十分特殊的民族服饰——“贯头衣”、“披围式长衫”。
C.
战国中后期至自秦汉时期,中国民族文化交流达到了空前未有的广度和深度。赵武灵王的“胡服骑射”成为这个时期中国民族服饰文化交流、发展中的一大创新和亮点。
D.
满族的形成,不但把我国草原游牧民族的服饰文化提高到了崭新的发展阶段,并且对服饰的穿戴进行了严格规定。
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