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【单选题】
With today's advancements in communications combined with computers and handhold devices, we now have multiple ways to connect and socialize regardless of the distance. However, the communication method of choice is often dictated by one's age, and each age group bas gravitated (受吸引) to that method with which they have become most familiar and comfortable. For example, most of those in our young generation have embraced email and cell phones. We use email to communicate with our friends or business associates because it's easy and convenient, especially for spanning times zones. Email also allows us time to work out our thoughts as we create the message and is less intrusive than a phone call. Most of us also own cell phones, although the primary reason is often to have a means of contacting others in the event of an emergency. Also growing in popularity are services such as Skype that enable us to make free or low-cost phone calls from our computers. But many in my generation are also caught between the resistance of our parents' older generation to new technology and the lightening-fast adoption to instant ways of connecting exhibited by our children and others of younger generations. Many older adults in our lives would rather keep in touch by means of their land-line house phone. This creates a dilemma for those of us who have become accustomed to more modern forms of communication. As our parents and grandparents age, we encourage them to take advantage of modern technology and carry a cell phone or use email so we can easily keep in touch, but they often resist bemuse of the cost and complexity. Fortunately there are some modern conveniences that do a better job of bridging the gap between today's technology and yesterday's comfort level. The Jitterbug cell phone, for example, was designed for seniors and is much easier to use than most other cell phones. It also offers that familiar feel of the traditional phone with its use of a dial tone and access to a friendly operator when you dial zero. And if the older adults in your life can't afford or are overwhelmed by a computer, there are products like MyCelery (a two-way communication method using familiar fax hardware) and Presto (a communication service offering one-way delivery of photos and letters) that can help them be connected enough to enjoy the instant gratification (满意) of receiving digital pictures or a quick e-note. The younger generation is less into using email and more into instant connections using SMS (Short Message Service) ,also known as text messaging or texting, on their cell phones. One way to win brownie (核仁巧克力饼) points with your grandkids is to flex your thumbs on your cell phone keypad and send them text messages, According to a recent poll by Cingular Wireless, the majority of parents who text their children felt that it improved communications with their kids and made them easier to reach. What's the author's attitude toward the change of communication methods?
A.
The author shows no interest in the change of communication methods.
B.
The author thinks the new way is more convenient and helpful.
C.
The author believes it is useless to change the communication method.
D.
The author can accept the change but insist on the traditional way.
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【简答题】曹禺在《雷雨·序》中提到 是剧中最“雷雨”性格的人物。
【单选题】关于离心泵比转数的下列说法中对的是____。
A.
求出的都是无量纲准则数
B.
算法相同,所用单位不同,故所得数值不同
C.
几何相似的泵如运送同种液体,比转数必然相等
D.
输送同样液体的比转数相同的泵,如叶片数目、形状相同,一般几何相似
【判断题】儿童自传体记忆有明显的性别差异和文化差异,通常女孩比男孩好,东方文化中的孩子比西方的儿童更喜欢谈论自己的感想和喜好。()
A.
正确
B.
错误
【简答题】曹禺在《雷雨·序》中提到 是剧中最“雷雨”性格的人物。
【单选题】Debris flew as the living-room fireplace and its chimney collapsed.
A.
small individual parts
B.
completely good places
C.
well preserved pieces
D.
scattered broken pieces
【判断题】儿童自传体记忆有明显的性别差异和文化差异,通常女孩比办男孩好,东方文化中的孩子比西方的儿童更喜欢谈论自己的感想和喜好。
A.
正确
B.
错误
【简答题】当半导体两端外加电压时,半导体中将出现两部分电流:一是自由电子作定向运动所形成的 ;一是仍被原子核束缚的价电子递补空穴所形成的 。
【单选题】关于离心泵比转数的下列说法中错误的是()
A.
几何相似的泵如运送同种液体,额定工况的比转数必然相等
B.
通常给出的比转数都是相对额定工况而言
C.
比转数相等的泵必定几何相似
D.
输送同样液体的比转数相同的泵,如叶片数目、形状相同,一般几何相似
【简答题】当半导体两端外加电压时,半导体中将出现两部分电流:一是自由电子作定向运动所形成的 ;一是仍被原子核束缚的价电子递补空穴所形成的 。
【简答题】当半导体两端外加电压时,半导体中将出现两部分电流:一是自由电子作定向运动所形成的 电流 ;一是仍被原子核束缚的价电子递补空穴所形成的 电流 。
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