A. disappeared
C
Kiến thức: từ vựng
Giải thích:
disappear (v): biến mất vanish (v): biến mất
kill (v): giết extinct (adj): tuyệt chủngWhich 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?