题干

水银气压计若挂歪了,其读数将会(      )

A:与实际气压一样大

B:比实际气压小

C:比实际气压大

D:无法确定

上一题 下一题 0.0难度 选择题 更新时间:2018-05-06 04:38:12

答案(点此获取答案解析)

C

同类题2

阅读下面短文,掌握大意,然后从各题所给的四个选项中选出最佳选项。

    Yesterday is Father's Day. Many things happening between my father and me crowded my mind. But one thing made a deep impression on me.

    It was a Sunday morning, and I was in a 1mood.Two of my friends had gone to the movies the night before and hadn't invited me. I was in my room2ways to make them sorry when my father came in. “Want to go for a ride today, Beck? It's a beautiful day.”

    “No! Leave me alone!” Those were the 3words I said to him that morning.

    My friends called and4me to go to the mall with them a few hours later. I forgot to be 5with them and then went with them. When I came home, I found a6on the table. My mother put it where I would be sure to see it.“Dad has had an 7.Please meet us at Highland Park Hospital.”

    When I reached the hospital, my mother came out and told me a car hit my father and he was badly hurt.“Your father told the driver to leave8alone and just call 911,thank God! If he had moved Daddy, …”

    My mother may have said more,but I didn't hear. I didn't hear anything 9those terrible words: Leave me alone. My dad said them in order to10himself. He didn't want to be hurt more.How much had I hurt him 11I shouted out those words at him earlier in the day?

    It was several days later that he could12have a talk. I held his hand gently, afraid of hurting him.

    “Daddy … I am so sorry …”

    “It's okay, sweetheart. I'll be okay.”

    “No, ” I said, “I mean about 13I said to you that day. You know, that morning?”

    He looked at me and said, “Sweetheart, I remember 14about that day, not before, during or after the accident. I remember telling you goodnight the night before,though.” He managed a weak smile.

    My English teacher once told me that words have great power. They can hurt or they can heal(治愈). And we all have the power to15our words. I am going to do that very carefully from now on.

同类题3

阅读下面两则材料,完成1—3题。

【材料一】


 南水北调工程,是缓解我国北方水资源严重短缺局面的战略性基础设施,分东、中、西三条线路。东线、中线一期工程已分别于2013年和2014年通水,以南方充盈之水 (滋润  滋养)北方干渴大地的梦想已经实现。南水北调工程将发挥显著的社会效益、生态效益和经济效益。以中线一期工程为例,输送的距离长,流经的范围广,沿线经过多个大中城市,每年可输送的调水量达95亿立方米,相当于黄河水量的1/6,直接受益人口达6000万。根据需要,后期将进一步扩大调水规模,减少地下水开采,使水生态恶化的趋势得以缓解。随着受水区水资源生态的改善,影响北方经济发展的“瓶颈”将逐步消除,从而为这些地区经济结构调整创造机会和空间。

【材料二】

    2014年12月27日,北京市南水北调工程正式通水。南水北调工程年均为北京送水12.4亿立方米,供水范围达6000平方公里,成为北京的主力水源,城市供水保证率将由75%提高到95%。此外,南水北调工程通水后,不仅减少北京重要水源地密云水库的出水量,还可以将富余来水调入密云水库存蓄,大大加强北京水资源战略储备。南水北调工程通水后,北京将逐步关闭大部分自备井,通过天然和人工  (回填  回补),有效遏制地下水位的大幅下降。同时,部分来水还可向首都的河湖补充清水,增强水体的稀释自净能力,改善河湖水质。