皮皮学，免费搜题
登录
搜题
【简答题】
给出下列命题： ①函数 y=sin( 5π 2 -2x) （x∈R）是偶函数； ②函数 f(x)=co s 2 x- 1 2 （x∈R）的周期为π； ③函数 y=sin(x+ π 4 ) 在闭区间 [- π 2 ， π 2 ] 上是增函数； ④将函数 y=cos(2x- π 3 ) （x∈R）的图象向左平移 π 3 个单位，得到函数y=cos2x的图象． 其中正确的命题的序号是：______．
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】His love of English is __________ his parents are both English teachers.
A.
due that
B.
due to that
C.
because of
D.
due to the fact that
【单选题】Please wait a minute. I have _______ to say. [ ]
A.
else nothing
B.
anything else
C.
else something
D.
something else
【多选题】MBTI的第一个维度是以能量获得的途径分成了外向E与内向I。如果把我们的精力比做一块充电电池,当电池快要用完的时候,下列哪个选项是正确的?
A.
愿意和朋友死党待在一起,倾诉、沟通、交流、骂人的充电方式的,是外向E
B.
愿意和朋友死党待在一起,倾诉、沟通、交流、骂人,的充电方式的,是内向I
C.
愿意找一个安静的地方,自己一个人呆着,的充电方式的,是内向I
D.
愿意找一个安静的地方,自己一个人呆着,的充电方式的,是外向E
【单选题】—Is there anything else I can get for you except the book? — No. That _____ be it. Thanks a lot.
A.
could
B.
must
C.
should
D.
might
【单选题】听力原文：Is there anything else I can do for you? (A) That's it for now, thank you. (B) I'm afraid I can't help you now. (C) That' s exactly what I mean. (32)
A.
B.
【简答题】A．How much is it? B．Can I buy anything else? C．That's enough.
【单选题】He love of English is _________ his parents are both English teachers.
A.
due that
B.
due to that
C.
because of
D.
due to the fact that
【单选题】Is there anything else I can get for you?
A.
Yes, thank you.
B.
No, there is no need for your help.
C.
No, that should be it.
D.
I don't think so.
相关题目：