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听力原文: Everywhere we look, we see Americans running. They run for every reason anybody could think of. They run for health, for beauty, to lose weight, to feel fit, and because it is the thing they love to do. Every year, for example, thousands of people run in one race, the Boston Marathon, the best known long distance race in the United States. In recent years there have been nearly 5,000 official competitors and it takes three whole minutes for the crowd of runners just to cross the starting line. You may have heard the story of the Greek runner, Pheidippides. He ran from Marathon to Athens to deliver the news of the great victory 2,500 years ago. No one knows how long it took him to run the distance. But the story tells us that he died of the effort. Today in very few cases will one die in a Marathon race. But at the finish line, we see what this race is about; not being first, but finishing. The real victory is not over one's fellow runners, but over one's own body. It is a victory of will-power over fatigue. In the Boston Marathon, each person who crosses that finish line is a winner. (30)
A.
Three minutes.
B.
Two Minutes.
C.
One minutes.
D.
Five minutes.
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举一反三
【单选题】慢性钝痛不宜用吗啡的主要理由是
A.
对钝痛效果差
B.
治疗量即呼吸抑制
C.
可致便秘
D.
易成瘾
E.
易引起体位性低血压
【判断题】铅酸蓄电池放电电流越大,放电的终止电压就越高。
A.
正确
B.
错误
【单选题】固定偏置放大电路中,晶体管的 ,若将该管调换为 的另一个晶体管,则该电路中晶体管集电极电流将( )。
A.
增加
B.
减少
C.
基本不变
【单选题】固定偏置放大电路中晶体管的 =0,若将该管换为 =50的另一个晶体管,则该电路中晶体管基极电流将( )。
A.
增大
B.
减小
C.
基本不变
D.
无法确定
【判断题】产褥早期皮肤排出大量汗液,于产后1周内自行好转,不属病态。
A.
正确
B.
错误
【单选题】下图所示结构,i为线刚度,若使截面B顺时针发生单位转角,在B点施加的力矩大小为( )。【图片】
A.
5 i
B.
6 i
C.
7 i
D.
8 i
【多选题】正式场合赠送和接收礼品时,那些话不合规范?(    )
A.
“祝你生日快乐!”
B.
“一点小礼物,拿不出手,请笑纳。”
C.
“这是我们当地的特产,是特别为您选的,请您收下。”
D.
“实在不好意思”或“实在受之有愧”。
【单选题】慢性钝痛不宜用吗啡的主要理由是
A.
成瘾性
B.
对钝痛效果差
C.
治疗量即呼吸抑制
D.
可致便秘
【单选题】慢性钝痛不宜用吗啡的主要理由是
A.
对钝痛效果差
B.
治疗量即抑制呼吸
C.
可致便秘
D.
易产生依赖性
E.
易引起体位性低血压
【单选题】下图所示结构, i 为线刚度,若使截面 B 顺时针发生单位转角,在 B 点施加的力矩大小为( )。
A.
3 i
B.
5 i
C.
7 i
D.
8 i
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