掌握科学的探究实验方法,积极动手实践,是获取生物学知识,体验科学探究过程的重要途

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问题:

掌握科学的探究实验方法,积极动手实践,是获取生物学知识,体验科学探究过程的重要途径,以下是初中生物学探究实验中的一些操作过程与现象,请结合自己的实践,回答相关问题.

(1)在使用显微镜时,视野内出现了一个污点,你有什么办法来判断这个污点是在物镜上还是在目镜上?______;

(2)在探究“光对鼠妇生活的影响”时,某小组同学做的记录如下:

全班统计时,该小组提供的数据应是______.

(3)在“观察小鱼尾鳍内血液的流动”实验中,你是如何保证小鱼呼吸的?______.

(4)在“检测不同环境中的细菌和真菌”的探究中,检测口腔中是否有细菌和真菌,你是如何接种的?______.

考点:探究实验:光对鼠妇生活的影响显微镜的构造和使用观察实验:观察小鱼尾鳍内血液的流动探究实验:检测不同环境中的细菌和真菌
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Before you hit ‘Enter’ on MSN, read this

It is often said that the language we use online is less formal than that we use in a letter, or in direct speech sometimes. This is true, but it can also make us in trouble sometimes.

The thing about online communication is that you have no idea what the person who is reading your messages is feeling. For this reason, it is always a good idea to be polite and cautious when writing e-mails or messages to your friends.

Chinese can be a direct language, but in English, people often talk about a subject in another way. So instead of saying “Please meet me here” or “Do this for me now”, English speakers usually go for indirect phrases like “Would it be possible”, “if you have time” or “It would mean a lot to me if…”

If you have a close friend, you may still run into trouble because of your jokes. If you have asked someone to do something and they need a bit more time, you might joke with him: “What? You still haven’t done it yet? What’s wrong with you?” While this seems funny to you, your friend may feel unhappy.

If you have foreign friends in different countries, the time difference can also be a factor. While you are waking up for class on Friday morning, they may be having a party on Friday night. You will be serious and they will, probably, be excited. So don’t be angry if they seem not to care about you. Just try to message them at the proper time.

小题1: According to the passage, we learn that our letters are more ______ than the e-mails.

A.formal

B.direct

C.different

D.funny小题2: As a language, Chinese is ______, but English is not.

A.polite

B.rude

C.direct

D.formal小题3: Why should we be polite and cautious while chatting online?

A.Because we mustn’t play jokes online.

B.Because our friends are easy to be angry.

C.Because it can help us avoid lots of troubles.

D.Because we can’t see our friends online.小题4: According to the passage, which of the following is right?

A.It is OK to connect your friend by MSN anytime.

B.Using the proper way to chat online is necessary.

C.Don’t ask your friend to do something for you by MSN.

D.Never play jokes with your friends.

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一个圆锥的底面直径是10厘米,它的底面积是314平方厘米.______.

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现场检查的重点内容有( )。

A.市场风险敏感度

B.业务经营的合法合规性

C.资产质量

D.管理水平和内部控制

E.风险状况和资本充足性

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大翼防冰活门的位置在()

A.每台发动机吊架内部

B.位于内侧大翼前缘

C.位于每台发动机吊架外侧的每个机翼内侧前缘内

D.位于各自大翼外侧前缘

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Sun公司网站上提供了Sun全球各公司的链接网址,其中www.sun.com.cn表示Sun()分公司的网站。

A.中国

B.美国

C.日本

D.匈牙利

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