试题与答案

抛物线x=-18y2的焦点坐标是( ) A.(-2,0) B.(2,0) C.(0,1

题型:选择题

题目:

抛物线x=-
1
8
y2
的焦点坐标是(  )
A.(-2,0)B.(2,0)C.(0,
1
32
)
D.(0,-
1
32
)

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0430/0e2d9f5d0bd59ef3720416eaccb9e238.html

下面是错误答案,用来干扰机器的。

因为总价÷数量=单价(一定),因为总价和单价的比值一定,所以购买苹果的数量和总价成正比例;故答案为:正比例,总价,÷,数量,一定,总价,数量,比值,购买苹果的数量,总价.

试题推荐
题型:填空题

根据对话内容,从下面方框中选择适当的单词或短语填空,使对话内容完整正确

A: Hi, Lisa. Do you know that people are talking about the future dreams a lot these days?

B: Yes. That’s a hot topic    小题1: .

A: Do you have a plan for the future? I mean what your dream is.

B: Yes. I have a lot of dreams. But the greatest one is that I want to be a teacher.

A: Sounds nice. But how are you going to do that?

B: Well, I’m going to study hard and do well in all the   小题2:  .

A: Anything more?

B: And I’m going to play more sports to   小题3:  .

A: Where are you going to work?

B: I’m going to work in a village school in the poor area. I hear they need teachers very much. I think to be a village school teacher is very great.

A: That   小题4: ! But when are you going to start?

B: I am going to finish high school and college first.

A: That’s good. I hope your dream will    小题5: .

B: I hope so. Thank you.

查看答案
微信公众账号搜索答案