认识自我，成就自我：

材料：刘全从小就立下大志，将来要当这个家，那个家，但进入初中以来，刘全总觉得自己的能力上不如这个，不如那个。“你看，黄思莹反应真快，老师一提问题，还没等说完，她就举手回答，而且答得相当精彩。”“为什么我的记忆力不好，老是丢三落四。”“陈诚好活跃，人际交往能力特强，同学们都很喜欢他。”“我家对面的男孩聪明极了，参加全省数学竞赛获得一等奖，真叫人羡慕。”阅读上述材料，回答下列问题：

    See a cell phone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting "print" on your computer. You might find it hard to believe that you could actually "print" an object as you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays (喷) ink onto paper line by line, modem 3-D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.

    Instead of ink, the materials the 3-D printer uses are mainly plastic, resin (树脂) and certain metals. The thinner each layer is — from a millimeter to less than the width of a hair —the smoother and finer the object will be. This may sound like a completely new technology, but the truth is that 3-D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.

    Last year, though, saw a big change in the 3-D printing industry — printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost £20,000, while now they cost only about £ 1,000, according to the BBC. Taken out of the factory and introduced to more diverse and common uses, 3-D printing can create just about anything you can think of --- flutes (笛子), bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3-D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.

    However, as 3-D printing becomes more common, it may bring about certain problems —such as piracy. "Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3-D printer, who will visit a retail (零售的) store again?", an expert in 3-D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3-D printer to print out a fully functioning gun?

昭阳湖初中八年级某班同学在课堂上齐声朗读“这标志着祖国大陆获得了统一，各族人民实现了大团结”。据此，我们可判断该班正在学习（    ）