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For a while, my neighborhood was taken over by an army of joggers(慢跑的人). They were there all the time: early morning, noon, and evening. There were little old ladies in gray sweats, young couples in Adidas shoes, middle-aged men with red faces. “Come on!” My friend Alex encouraged me to join him as he jogged by my house every evening. “You’ll feel great.” Well, I had nothing against feeling great and if Alex could jog every day, anyone could. So I took up jogging seriously and gave it a good two months of my life, and not a day more. Based on my experience, jogging is the most overvalued form of exercise around, and judging from the number of the people who left our neighborhood jogging army. I’m not alone in my opinion. First of all, jogging is very hard on the body. Your legs and feet are a real pounding(沉重的脚步) running down a road for two or three miles. I developed foot, leg, and back problems. Then I read about a nationally famous jogger who died of a heart attack while jogging, and I had something else to worry about. Jogging doesn’t kill hundreds of people, but if you have any physical weaknesses, jogging will surely bring them out, as they did with me. Secondly, I got no enjoyment out of jogging. Putting one foot in front of the other for forty-five minutes isn’t my idea of fun. Jogging is also a lonely pastime. Some joggers say, “I love being out there with just my thoughts” Well, my thoughts began to bore me, and most of them were on how much my legs hurt. And how could I enjoy something that brought me pain? And that wasn’t just the first week—it was practically every day for two months. I never got past the pain level, and pain isn’t fun. What a cruel way to do it! So many other exercises, including walking, lead to almost the same results painlessly, so why jog? I don’t jog any more, and I don’t think I ever will. I’m walking two miles three times a week at a fast pace, and that feels good. I bicycle to work when the weather is good. I’m getting exercise, and I’m enjoying it at the same time. I could never say the same for jogging, and I’ve found a lot of better ways to stay in shape. 小题1:From the first paragraph, we learn that in the writer’s neighborhood _________. A.Jogging became very popular B.People jogged only during the daytime C.Alex organized an army of joggers D.Jogging provided a chance to get together 小题2:The underlined word “them”(Paragraph 3) most probably refers to _____. A.heart attacks B.back problems C.hundreds of people D.physical weaknesses 小题3:From the writer’s experience, we can conclude that_____ A.Jogging can help people keep fit B.Many physical problems result from jogging C.Not everyone enjoys jogging D.Jogging makes people feel greater
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【简答题】小进化是指出现在不产生新物种的一个种群内基因频率的改变。小进化积累后,一个种群变得与其它种群明显不同,这个种群内的个体不再能与其它种群的个体繁殖后代。那时候,这个种群就成为一个新的物种。由于这种新物种连续进化,生物学家可能最终认为它属于一种新的属、目、科或分类学上的更高层次中的物种。这种在种或更高层次上的进化叫大进化。小进化过程相当迅速,事实上,它可能无处不在。例如,在抗生素发现后的不到半个世纪里...
【单选题】()是压片机中直接实施压片的部分,并决定了片剂的大小、形状
A.
冲头
B.
调节器
C.
模圈
D.
饲料器
【单选题】我国跨境贸易电子商务的海关监管方式代码( )适用于境内个人或电子商务企业通过电子商务交易平台实现交易,并采用“清单核放、汇总申报”模式办理通关手续的电子商务零售进出口商品
A.
9600
B.
1210
C.
1200
D.
9610
【判断题】销售折扣(现金折扣) 发生在销货之后,属于一种融资行为。
A.
正确
B.
错误
【单选题】正常人体温在24h内呈周期性波动,体温最高出现在( )
A.
上午9-11点
B.
中午12点左右
C.
清晨2-6点
D.
上午7-8点
E.
午后13-18点
【单选题】( )是压片机中直接实施压片的部分,并决定了片剂的大小、形状
A.
模圈
B.
调节器
C.
冲模
D.
饲料器
【判断题】产率也叫选择性
A.
正确
B.
错误
【单选题】关于逆向选择的错误表达是
A.
逆向选择是指由交易双方信息不对称和市场价格下降产生的劣质品驱逐优质品,进而出现市场交易产品平均质量下降的现象。
B.
由于信息的不完全性和机会主义行为,有时候,降低商品的价格,消费者也不会做出增加购买的选择,提高价格,生产者也不会增加供给的现象。所以,叫逆向选择。
C.
逆向选择是制度安排不合理所造成市场资源配置效率扭曲的现象,是基于博弈参与方的事前选择。
D.
逆向选择理论深刻地改变了分析问题的角度,可以说给人们提供了逆向思维的路径,会加深市场复杂性的认识,由此能改变很多被认为"常识"的结论。
【判断题】正常成人体温在24h内呈周期性波动,清晨2~6时最低,午后2~8时最高。
A.
正确
B.
错误
【判断题】销售折扣发生在销货之后,属于一种融资行为,折扣额不得从销售额中减除
A.
正确
B.
错误
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