出国留学网托福考试真题

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2021年10月13日托福考试真题预测

 

  2021年10月9日的托福考试结束了,一轮托福考试过后,很多考生会搜集下一轮考试的预测试卷。和出国留学网一起来看看2021年10月13日托福考试真题预测,欢迎阅读。

  一、听力考试预测

  1. What is the lecture mainly about?

  (A) Ways to generate heat for nuclear fusion

  (B) Differences between nuclear fission and nuclear fusion

  (C) A controversial theory regarding how to generate nuclear fusion

  (D) The possibility of establishing sustained nuclear fusion

  2. According to the students, what are three advantages of nuclear fusion over nuclear fission

  Click on 3 answers.

  (A) Nuclear fusion can use a fuel that is more easily obtained.

  (B) Nuclear fusion can be achieved at lower temperatures.

  (C) Nuclear fusion produces more energy.

  (D) Nuclear fusion does not produce hazardous by-products.

  (E) Nuclear fusion does not require as many natural resources.

  3. Why does the professor mention isotopes of hydrogen?

  (A) To correct a student's comment about how fusion takes place in stars

  (B) To help answer a student's question about temperature requirements for fusion reactors

  (C) To explain what happens to hydrogen atoms during fusion reactions

  (D) To justify the need for superconducting magnets in nuclear fusion reactors

  4. According to the professor, how will the ITER reactor differ from earlier experimental fusion reactors?

  Click on 2 answers.

  (A) It will be transportable to different locations....