如果既定的资源配置状态能够在其他人福利水平不下降的情况下，通过资源重新配置使至少一个

情景对话。

M: Hey, Karen, it looks like you've got some sun this weekend.

W: Yeah, I guess so.I spent the weekend at the beach.

M: Oh, yeah, that's great.__1__

W: At my friend's house.Some friends of my parents' live out there and they invited me for as long as I wanted to stay.

M: So what are you doing back here already?

W: _2__and I just couldn't do any serious studying at the beach.

M: I don't blame you.So what did you do out there?_3_

W: I ran slowly up and down the beach, and I played some volleyball.  4  I couldn't even get through a whole game before I had to sit down.

M: Did you go swimming?

W: I wanted to, but they said the water isn't warm enough for that until a couple of months from now.

M: _5_I wish I could get away to the beach like that.

A. I mean besides lying out in the sun.

B. Where did you stay?

C. How long did you spend there?

D. It's too cold for me.

E. It all sounds nice.

F. Oh, I have a paper to work on,

G. You know I never realized how hard it is to run on sand.

已知函数f（x）=-x³-sinx，（x∈R），对于任意的x₁+x₂＞0，x₂+x₃＞0，x₃+x₁＞0，下面对f（x₁）+f（x₂）+f（x₃）的值有如下几个结论，其中正确的是（　　）

A．零

B．负数

C．正数

D．非以上答案

显示垂直三盏换照红灯和航行灯的甲船，在狭水道中航行，看到显示在航机动船号灯的乙船舶从其右舷向左穿越水道，构成碰撞危险，谁是让路船：（）

A.甲船

B.乙船

C.甲船和乙船互为让路船

D.甲船和乙船负有同等避让责任

在幼儿园应禁止的门外罚站、不许吃饭等惩罚是（）

A．生理性惩罚

B．社会性惩罚

C．剥夺性惩罚

D．自然后果的惩罚

物业管理工作的评价应着重从以下( )方面考虑。

A．与租户有良好的沟通
B．及时收取租金
C．及时处理租户的投诉
D．以上全部正确