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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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参考答案:
举一反三
【单选题】( )量表中最早使用智力年龄的概念。
A.
比内 - 西蒙
B.
斯坦福 - 比内
C.
韦克斯勒
D.
瑞文
【单选题】以皮肤为标准的方位术语是
A.
前和后
B.
内和外
C.
上和下
D.
深和浅
【判断题】对于学生和新工作人员,在进实验室之前,要参加院系和实验室的安全教育和培训,经过考试合格后方可进入实验室工作;学生要在导师指导下开展实验研究。
A.
正确
B.
错误
【单选题】“有相才而无相气”是形容下面哪一位人物
A.
胡惟庸
B.
徐达
C.
杨宪
D.
汪广洋
【单选题】下列可导致承包商索赔的原因中,属于业主方违约的是()。
A.
业主指令增加工程量
B.
业主要求提高设计标准
C.
监理人不按时组织验收
D.
材料价格大幅度上涨
【单选题】以皮肤为标准的方位术语
A.
前后
B.
内外
C.
深浅
D.
内侧与外侧
【单选题】安全卫生认证制度的要点不包括( )。
A.
重大事故隐患认证
B.
有关人员资格认证
C.
有关单位、机构的劳动安全卫生资格认证
D.
与劳动安全卫生联系特别密切的物质技术产品的质量认证
【单选题】对某些收件如何办理和交于何人办理等提出初步意见,并在文件办理笺上写明,以供领导思考定夺的办文环节叫()
A.
注办
B.
拟办
C.
批办
D.
承办
【单选题】在借贷记账法下,资产类账户的期末余额一般在( )。
A.
借方
B.
贷方
C.
在借方,也可以在贷方
D.
无余额
【多选题】下列有关代谢产物描述,哪些是正确的
A.
代谢产物分为初级代谢产物和次级代谢产物。
B.
初级代谢产物是指生物体生命活动所必需的代谢物质。
C.
次级代谢产物是生物体生命活动无关的代谢产物。
D.
初级代谢产物和次级代谢产物均是生物体生命活动所必需的。
E.
初级代谢产物包括氨基酸、核苷酸、维生素、生物碱和毒素等。
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