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Many people have heard stories of the California gold rush during the 19 th century, when lots of people went there in search for gold. Panning (淘洗) for gold has a rich and interesting history. Nowadays some people continue to pan for gold in California. Although it cannot be regarded as a method for earning income, taking on gold-panning as a hobby can give you a feeling of being in the old west and get you out into nature. The only tool that is required to pan for gold is a gold pan. You can use a regular old flat pan, but “officially” gold pans are quite cheap so you may as well buy one that is made for the task. Most sold pans come in either plastic or medal. Once you have your pan you will want to start practicing your gold panning technique. Panning for gold works because gold is much heavier than most rocks. To pan for gold you add rock and dirt form the bottom of a stream to your pan and then gently let water flow through the pan. The lighter-weight rocks are slowly swept away while any gold will be left behind in the pan. To start panning for gold, first you will need to find a good location. Try checking maps of your area and old history books to find location where there were gold mines in the past. Even though most of the gold have already been removed, there are likely to be small leftovers that you can find. Once you have found an area that looks promising, look for any small stream or river where you can try out panning for gold. Panning for gold requires patience and it may be a long time before you hit anything of value. However, it is an enjoyable hobby and provides a great opportunity to get outdoors, so don’t give up too quickly. 小题1:What is Paragraph 4 mainly about? A.Where to pan for gold. B.How gold-panning works. C.What tools are needed. D.A promising area for panning. 小题2:What is the author’s attitude toward modern gold-planning? A.Opposed. B.Indifferent . C.Positive. D.Neutral . 小题3:In which part of a newspaper would you probably find this article? A.Lifestyle. B.Health. C.Travel. D.Sports.
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A.
大学生应该把学习放在第一位
B.
树立正确的恋爱观
C.
恋爱要建立在互敬互重的基础上。
D.
爱情至上
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乙型肝炎
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糖尿病
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高血压
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贫血
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A.
爱情是主要任务,学习是动力
B.
学习是主要任务,爱情是动力
C.
学习和爱情都是主要任务,不需要动力
D.
学习和爱情既是主要任务,也是动力
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缺氧刺激呼吸中枢导致先兴奋后抑制
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二氧化碳潴留刺激化学感受器导致先兴奋后抑制
C.
A和B
D.
以上两者都不是
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A.
体内缺氧,影响细胞的呼吸作用
B.
体内二氧化碳使呼吸中枢兴奋
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体内氧多,呼吸中枢受抑制
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肺泡内的弹性纤维功能下降
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A.
乙型肝炎
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高血压
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贫血
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A.
先抑制后兴奋
B.
先兴奋后抑制
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长期兴奋
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长期抑制
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爱国主义
B.
利己主义
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乙型肝炎
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唐尿病
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高血压
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贫皿
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A.
个人主义
B.
集体主义
C.
功利主义
D.
利己主义
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