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关于 f(x)=4sin(2x+ π 3 )(x∈R) ，有下列命题： ①y=f（x）图象关于直线 x=- 5π 12 对称 ②y=f（x）图象关于（ - π 6 ，0）对称； ③y=f（x）图象上相邻最高点与最低点的与x轴的交点一定在y=f（x）的图象上． 其中正确命题的序号有 ______．
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反馈参考答案：
举一反三
【判断题】Directions: In this section, you will hear a passage. Listen to the passage and decide whether the following statements are true (T) or false (F). finaltest-test1-passage1.mp3: 1. Many of the Dutch ex...
A.
正确
B.
错误
【简答题】小乌龟陶陶重复说着一句话“我一直说,我会准时赶到的!”,你觉得这句话体现了小乌龟的什么特点?
【简答题】Listening Comprehension Section C sectionC.mp3: Directions: In this section you will hear a recorded short passage. The passage is printed in the test paper, but with some words or phrases missing. Th...
【单选题】In 2010-2011, several EU countries received large bailouts from the EU. What were those countries?
A.
Germany, Italy, and Greece
B.
England, Greece, and Ireland
C.
Germany, England, and France
D.
Ireland, Portugal, and Greece
【单选题】In 2010-2011, several EU countries received large bailouts from the EU. What were those countries?
A.
a. Germany, Italy, and Greece
B.
b. England, Greece, and Ireland
C.
c. Germany, England, and France
D.
d. Ireland, Portugal, and Greece
【简答题】下列属于良性骨肿瘤的X线表现的是（ ）。
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