For many years, people _____electric cars. However, them has been more difficult than predicted. [
更新时间:2026-05-30 22:49:48 栏目: 中华词典
更新时间:2026-05-30 22:49:48 栏目: 中华词典
For many years, people _____electric cars. However, them has been more difficult than predicted. [ ] A. had dreamed of B. have dreamed of C. dreamed of D. dream of
The correct answer is:
B. have dreamed of
Explanation: The sentence describes an ongoing situation over many years, so the present perfect tense ("have dreamed of") is used to indicate an action that started in the past and continues into the present.
色轮上的颜色位置,处于60°左右的色彩称为中差色。() A. 正确 B. 错误
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