| 1. D 2. B 3. C 4. A |
| 1. It can be seen from the phrase "They could not explain exactly how the invention worked" in Paragraph 4 and Paragraph 7. " and paragraph 7 can be known. This question mainly tests students' overall comprehension. 2. A is interpreted as a judgment; C is not compared with the content of the text; D is wrong in "thermal fusion". 3. Instead of releasing more "electrical energy", it should be "thermal energy", which is a conceptual shift. 4. B error in the "broader application prospects than the development of nuclear energy"; C "must be able to" too arbitrary; D content of the text is not mentioned. |