According to the passage, what makes mobile phones potentially harmful is ____________.
Đáp án D
Kiến thức: Đọc hiểu
Giải thích:
Theo bào đọc, cái làm cho điện thoại di động có thể có hại là ... .
A. lực hút (sức hấp dẫn) B. năng lượng đột ngột
C. ánh sáng rực rõ D. những tia không thể nhìn thấy
Dẫn chứng: What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones.
Which of the following is closest in meaning to crux in paragraph 4?
The changes possibly caused by the cell phones are mainly concerned with ____________.
Compared to preindustrial times, the number of hours in the workweek in the nineteenth century______.
The man mentioned in the passage, who used his cell phone too often, ____________.
According to the article, which quality will technology never be able to replace?