搜题请搜索小程序“爱下问搜题”
问题 选择题

20年前买一部手机要花2万多元，相当于当时一个普通工薪者20年的收入。最近，王小姐买了一部手机只花了300多元，仅相当于一个普通工薪者一周的收入。手机价格降低的根本原因是（ ）

A．厂家数量增多使产品供应量增大

B．商家采用了薄利多销的销售策略

C．科技进步增加了商品的技术含量

D．社会劳动生产率的提高使单位商品价值量减少

答案

答案：D

题目分析：价值决定价格，单位商品的价值量由生产该商品的社会必要劳动时间决定，和社会劳动生产率成反比，社会劳动生产率越高，商品的价值量越低，价格越低，故手机价格下降的根本原因是生产手机的社会劳动生产率的提高，使得手机的价值量减少，D正确；ABC不是根本原因。

填空题

When I was growing up, I was embarrassed to be seen with my father. He (1) severely crippled and very short, and when we would walk together, his hand on my arm (2) balance, people would stare. I would inwardly be afraid (3) squirm at the unwanted attention. If he ever noticed or was bothered, he never let (4) .
It was difficult to coordinate (5) steps - his halting, mine impatient - and because of that, we didn’t say much as we went along. But as we started out, he always said, "You (6) the pace. I will try to adjust to you. "
Our usual walk was to or (7) the subway, which was how he got to (8) . He went to work sick, and (9) nasty weather. He almost never missed a day, and would (10) it to the office even if (11) could not: a matter of pride!
He never talked about himself as an object of pity, (12) did he show any envy of the more fortunate or able. What he looked for in others was a "good heart", and if he found one, the owner was good enough for him.
Now that I am older, I believe that is a proper standard (13) which to judge people, even though I still don’t know precisely (14) a "good heart" is. But I know the times I don’t have one myself.
He has (15) gone many years now, but I think (16) him often. I wonder if he sensed my reluctance to be seen with him during our (17) . If he did, I am (18) I never told him how sorry I was, how unworthy I was, how I regretted it. I think of him when I complain about trifles, when I am (19) of another’s good fortune, when I don’t have a "good heart".
At such times I put my hand on his arm to regain my (20) , and say, "You set the pace, I will try to adjust to you.\
查看答案
单项选择题

对横纹肌有良好的刺激收缩作用的电针波形是（）

A．疏密波

B．断续波

C．锯齿波

D．密波

E．疏波
查看答案