2. 职称英语
  3. The main idea of this passage is ______. [br] Why is it difficult to predict the

The main idea of this passage is ______. [br] Why is it difficult to predict the

游客2025-03-16  3
问题 The main idea of this passage is ______. [br] Why is it difficult to predict the possible effects of electromagnetic fields on an airplane’s computers?
选项 A、Because it remains a mystery what wavelengths are liable to be interfered with.
B、Because it is extremely dangerous to conduct such research on an airplane.
C、Because research scientists have not been able to produce the same effects in labs.
D、Because experts lack adequate equipment to do such research.
答案 C
解析 见文章第3段的内容。第3段的第3句就回答了这个问题，因此答案是选项C。
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