由于我无法提供具体的四级填空题答案，以下是一个假设性的四级填空题及参考答案的示例。请注意，这些答案仅供参考，实际答案应以官方公布为准。
Example of a CET-4 Cloze Test and Answers
Text: The Internet has become an indispensable part of our lives. It offers a wealth of information and opportunities for communication. However, it also brings with it some challenges. For instance, [1]_ can lead to privacy concerns and [2]_.
[1] A. spamming B. overuse C. addiction D. viruses
[2] A. misinformation B. excessive use C. cyberbullying D. data breaches
Answers:
- C. addiction
- B. excessive use
Explanation:
The correct answer for the first blank is “addiction.” This choice fits the context as it refers to the potential negative effect of the Internet on individuals, such as spending too much time online and developing an unhealthy dependency.
The correct answer for the second blank is “excessive use.” This choice is appropriate because it complements the first blank, discussing the challenges of the Internet, particularly the overuse that can lead to various issues, including privacy concerns.
Remember, these answers are purely illustrative and not based on any actual CET-4 cloze test. For accurate answers, always refer to the official CET-4 test results.