As time goes on, how to do good critical thinking is increasingly marginalized or even left out. of the modem educational process. Critical thinking involves a mental process that is highly disciplined and therefore requires most practitioners to be trained in it. This training is best begun in the formative years, and it is best taught by energetic, motivated teachers who continually challenge, and debate, and demand increasingly rigorous thinking of their young students. However, as in all things, it is never too late to begin.
Critical thinking is the process of evaluating and analyzing a proposition or an argument that has been offered to the thinker, for criticism, as being true. There follows a process of reasoning, evaluation of the offered evidence, and reflection, always begun from a point of skepticism. A proper critique of the offered argument involves more than direct observation. Besides reasoning, cognition and experience, proper critical thinking also invol
A. because it requires well-organized mental activity.
B. because it has been stressed in modem education.
C. who marginalize the traditional idea of education.
D. who can direct students towards rigorous thinking.
Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.
The first is called the "tank test". A modern airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure(结构) of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere els
A. Two Important Tests on Airplanes
B. The Importance of Flying Safely
C. The Danger of Testing Airplanes
D. How Airplanes Are Made and Tested
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