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【单选题】
已知函数f(x)的定义域为[－1,5]，部分对应值如下表： x －1 0 4 5 f(x) 1 2 2 1 f(x)的导函数y＝f′(x)的图象如图所示． 下列关于函数f(x)的命题： ①函数y＝f(x)是周期函数； ②函数f(x)在[0,2]上是减函数； ③如果当x∈[－1，t]时，f(x)的最大值是2，那么t的最大值为4； ④当1 其中真命题的个数是( )A.
4
B.
3
C.
2
D.
1
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】By skimming, we aim to grasp the main idea of a passage, therefore, examples are usually skipped.
A.
正确
B.
错误
【简答题】合同成立与合同生效的区别
【单选题】We can infer from this passage that
A.
girls usually attended private primary schools
B.
only girls attended classical schools
C.
girls did not like going to school
D.
Maria was a girl of strong will
【单选题】At that time, we did not fully grasp the significance of what had happened.
A.
give
B.
attach
C.
understand
D.
lose
【单选题】When we are reading, the important thing is to grasp the essential meaning, not to learn every single word.
A.
clasp
B.
grab
C.
understand
D.
grapple
【单选题】Anxiously, she took the dress out of the package and tried it on, only _________ id didn’t fit
A.
to find
B.
found
C.
finding
D.
having found
【简答题】合同成立与合同生效的区别
【简答题】简述合同成立与合同生效的区别。
【单选题】At that time, we did not fully grasp the significance of what had happened.
A.
give
B.
attach
C.
lose
D.
understand
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