---- Which of these digital cameras do you like best?

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I’m expecting a digital camera for long, but dad has no time to buy ______ for me.

A．it

B．one

C．this

D．that

（14分） DIS（Digital Information System）系统即数字化信息系统，它由传感器、数据采集器和计算机组成。DIS系统为化学教学提供了全新的技术手段和教学平台。某学习小组用DIS系统测定食用白醋中醋酸的物质的量浓度，以溶液的导电能力来判断滴定终点。实验步骤如下：
（1）用______________（填仪器名称）量取10.00mL食用白醋，在_________（填仪器名称）中用水稀释后转移到100mL_______（填仪器名称）中定容，然后将稀释后的溶液倒入试剂瓶中。
（2）量取20.00mL上述溶液倒入烧杯中，连接好 DIS系统（如右图），向烧杯中滴加浓度为0.1000mol·L ^{－ 1} 的氨水，计算机屏幕上显示出溶液导电能力随氨水体积变化的曲线（见右下图）。


①用滴定管盛氨水前，滴定管要用____________润洗2～3遍，
润洗的目的是____________________________________。
②溶液导电能力随氨水体积变化的原因是__________________________________________。
③食用白醋中醋酸的物质的量浓度是_____________。

B
As a teenager of the digital era, it is really hard to say no to fantastic electronic gadgets(电子产品). Many of us can’t get through a day without using our mobile phones or checking our e-mails. No matter if we’re “@home”, “@school” or“@play”, living without technological toys seems more and more unthinkable.
However, although gadgets bring convenience, many of us can start to feel stressed out by them. And, a lot of electronics are fairly expensive. Fashionable gadgets come and go in the digital age in the blink of any eye. So, think twice before you pulling out your wallet.
Here are some of the most popular gadgets and their pros and cons:
Pros: Laptops have made our lives much easier. You can take your books, movies, music and homework everywhere.
Cons: They cost at least 4,000 yuan! If you only want to share photos or games with your friend, then a flash memory stick is a great cheap alternative.
Pros: As well as carrying your favourite music, a video MP3 player can play up to 150 hours of movies and TV programmes.
Cons: The price—sometimes more than 2,000 yuan—is the first concern. Secondly, though music is really important to young people, ask yourself if video is really necessary. A regular MP3 player is a lot cheaper. And remember, don’t let the loud volume damage your hearing.
Pros: New mobile phones combine traditional functions with a digital camera, MP3 player and even a radio. Some can also send and receive e-mails.
Cons: Always trying to keep up with the latest model can be a waste of money. There are always new, improved phones coming out. Don’t be a fool. Do you really need all these functions? Think twice before you buy.
60. According to the writer, which of the following statements is true?
A. Teenagers can’t live through a day without fantastic electronic gadgets.
B. Teenagers can hardly live happily without electronic gadgets.
C. Teenagers’ life is full of expensive electronic gadgets.
D. It’s all but impossible for many teenagers to live without fantastic electronic gadgets.
61. What conclusion can we draw from the passage?
A. Never buy the most updated gadgets.
B. You should buy the gadgets with as many functions as possible.
C. We needn’t always pay the most part to buy the most up-to-date gadgets with many functions.
D. Never buy the latest model, it’s much too expensive.
62. Choose the statement most similar in meaning to the underlined sentence in Paragraph2.
A. Fashionable gadgets are updated in the digital times in a flash.
B. Fashionable gadgets are transported everywhere in the digital age in the blink of any eye.
C. People keep buying and throwing away expensive fashionable gadgets in the digital age in the blink of any eye.
D. People use all kinds of fashionable gadgets all the time in the digital age.
63. What do the words “pros and cons” mean in the selection?
A. Agreements and disagreements.
B. The views that are favoured and not favoured by people.
C. Benefits and bads.
D. Advantages and disadvantages.

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The performance of this reasonably priced digital camera is _____ in quality to that of more expensive ones.

A．beneficial

B．fundamental

C．comparable

D．competitive

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