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【判断题】
如下图, 阴影部分面积为 ( )A.
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举一反三
【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.
【多选题】关于满族服饰描述正确的是( )
A.
满族男女都爱戴金化帽
B.
满族先民一年四季都穿袍服
C.
满族妇女喜爱随身佩戴荷包香囊
D.
满族妇女头上装饰品多用玛瑙、珍珠、宝石、金银制成。
E.
腰带是穿满族长所必备的
【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.
【简答题】（选修4—5：不等式选讲）设函数 。 （1）当a=－5时，求函数 的定义域。 （2）若函数 的定义域为R，求实数a的取值范围。
【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】Eating too much fat can _____ heart disease and cause high blood pressure.
A.
contribute to
B.
attribute to
C.
attest to
D.
devote to
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