试题与答案

在风景名胜区采集标本、野生药材和其他林副产品,必须经()同意,并应(),在指定范围内

题型:填空题

题目:

在风景名胜区采集标本、野生药材和其他林副产品,必须经()同意,并应(),在指定范围内进行。

答案:

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

E

Tips on how to save money

It’s important for you teenagers to know how to save money. You know that the money you save can be for rainy days and be used to pay through your college education. If you think it’s a difficult task and don’t know how to do it, please do as the following.

__小题1:__

My dad always tells me that if one doesn’t respect money, it will never respect you. Hence, it’s important that you keep a record of your daily expenses. Make it a habit to write down all that you have spent. And when you find out the total expenses at the end of the month, you will realize what you have spent more money in doing. ___小题2:___

Open a savings account.

Opening a savings account is a better way to save money. You can set a goal; say (for example), the money is for a new notebook or for college, and then save, until you have enough money to buy a notebook or until you go to college. ___小题3:___

Do not carry much cash.

Do you have the habit of not leaving a store without buying anything? The only way to stop that is carrying less money around with you. Go to the store with the minimum amount of money, which will not even help you buy a drink. ____小题4:____

Save the changes.

Save the changes that you get back. If you have gone to a shop to buy something and get back some changes, then do not spend them. ___小题5:___ And you’ll be surprised at the huge amount of money after days.

Follow these tips above, and thus you can save a lot of money. And surely, they’ll help you to be more responsible in your life.

A.Keep a record of your daily expenses.

B.After a few days, you’ll get rid of this habit.

C.Instead, you can save them in your piggy bank.

D.By that time, you will realize the importance of saving money.E. Saving money builds your financial power and personal freedom.

F. Next month, you will automatically try and save more in that part.

G. Nowadays in the developed and developing countries, people are all working for the sake of earning money.

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题型:填空题

某同学探究同周期元素性质的递变规律,并讨论影响化学反应速率的因素.选用的试剂如下:镁条、铝条、铝粉、钠、新制Na2S溶液、新制氯水、0.5mol•L-1盐酸、3mol•L-1盐酸、酚酞试液;其设计的实验方案及部分实验现象如下表:

实验步骤实验现象
①将一小块金属钠投入滴有酚酞试液的冷水中钠块浮在水面上,熔化成闪亮的小球,做不定向移动,随之消失,溶液变红色
②将表面积大致相同的镁条和铝条(均已用砂纸打磨过)分别投入足量的相同体积0.5mo1•L-1盐酸中镁条剧烈反应,迅速产生大量的无色气体,而铝条反应不十分剧烈,产生无色气体,镁条消失比铝条快
③将新制氯水滴加到新制的Na2S溶液中
④将相同质量的镁条(已用砂纸打磨过)和铝粉分别投入到足量的相同体积的0.5mol•L-1盐酸和3mol•L-1盐酸中剧烈反应产生气体,但铝粉消失比镁条快
请回答下列问题:

(1)实验①中可以说明该反应是放热反应的现象是______

(2)由实验②可得出决定化学反应快慢的主要因素是______

(3)实验③的现象是产生浅黄色沉淀,离子方程式为______

由实验③可以得出非金属性氯______硫(填“强于”、“弱于”、“无法比较”).

(4)实验④中,因为铝粉消失所用的时间短,因此,该同学得出结论:铝比镁易失电子,该结论是否正确?______(填“是”或“否”),通过实验④说明要加快化学反应速率可采取的措施可以是______或______.

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