单选题 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 involves intellectual values that go beyond the specific argument or object being critically examined.
These intellectual values involve objective truth. Objective truth is that truth which comes from somewhere outside of our minds. Subjective truth is that truth which comes from within us; that which we feel, or sense, or believe to be true. Objective truth stands alone, and does not depend upon us to remain true; it's completely independent of the mind of man. No matter what we think about it, how we think about it, or even if we think about it, objective truth remains objective truth, unchanged, and impervious. Objective truth must always be taken into consideration in order to do good critical thinking.
There are different forms of objective truth, ranging from solid to ephemeral. In the "hard science" fields, such as mathematics, physics and chemistry, the most recognized objective truths involve proven mathematical formulae, or recognized scientific laws, or widely recognized and as yet unrefuted scientific theories. These "hard" objective truths are taken by the critical thinker to be axioms or givens, and thus, useful tools to help in the critical thinking process. The process thereby builds upon a foundation of previously proven truth. No matter how technically advanced we ever become, we are all, individually and collectively, called to think about things. It is our human nature.

单选题 It is suggested that the training of critical thinking in the formative years is best conducted by teachers
【正确答案】 D
【答案解析】该题为细节题。根据第一段第三句“This training is best begun...it is best taught by energetic, motivated teachers who continually challenge, and debate, and demand increasingly rigorous thinking of their young students.”可知，成长时期的批判性思维最好是由那些不断挑战、辩论、要求他们的学生不断加强思维能力的精力充沛、有积极性的老师来训练，故选D。
单选题 A good critical thinker always
【正确答案】 C
【答案解析】该题为细节题。根据第二段第二句“There follows a process of reasoning…always begun from a point of skepticism.”可知，批判性思维总是以对某一个观点的怀疑为开端的，故选C。
单选题 Objective truth is regarded as
【正确答案】 A
【答案解析】该题为细节题。根据第三段最后一句“Objective truth must always be taken into consideration in order to do good critical thinking.”可知，为了能够有更好的批判性思维，人们总是会把客观真理考虑进来，与A项符合。B选项“客观真理是不变的人类信仰”与第三段第三句的“it's completely independent of the mind of man”不符，故B选项错误。C选项“客观真理在科学理论中不可被反驳”与最后一段第二句“In the 'hard science' fields.…and as yet unrefuted scientific theories.”不符，故C选项错误。D选项“客观真理是自然科学的产物”与第三段第二句“Objective truth is that truth which come from somewhere outside of our minds．”不符，故D选项错误。故选A。
单选题 What can be inferred from the last paragraph?
【正确答案】 D
【答案解析】该题为推断题。A选项“技术对批判性思维不起一点作用”与最后一段的第三句“These 'hard' objective truths are...and thus, useful tools to help in the critical thinking process.”不符，故A选项错误。B选项“批判性思维是反复试验的过程”和C选项“科学真理是批判性思维的基础”在最后一段中都没有提到，故B和C选项错误，故选D。
单选题 Which of the following best summarizes the text?
【正确答案】 B
【答案解析】该题为主旨题。全文主要论述批判性思维，第一段主要阐述批判性思维是如何被训练的，第二段主要解释什么是批判性思维，第三段主要论述客观真理，最后一段论述客观真理和批判性思维的联系。A选项“批判性思维的模式”，C选项“批判性思维的方法”和D选项“批判性思维的标准”在文中并没有涉及，而B选项“批判性思维的本质”最能概括全文的意思，故选B。