According to the second paragraph, when did cell phones actually help to reduce pedestrian and traffic fatalities
A: Right after cell phones were invented.
B: Before the number of cell phone users reached a critical mass
C: When cell phone users totaled to a certain number.
D: When the number of cell phones decreased to a certain number.
A: Right after cell phones were invented.
B: Before the number of cell phone users reached a critical mass
C: When cell phone users totaled to a certain number.
D: When the number of cell phones decreased to a certain number.
举一反三
- What is said about cell phone use in the mid-1980s in paragraph 5 A: It had a life-taking effect because there weren't enough cell phones in use then. B: The increased use of cell phones then caused a "life-taking effect." C: Traffic fatalities increased then because the number of cell phones in use decreased. D: Traffic fatalities decreased then because the number of cell phones in use increased.
- What is said about cell phone use in paragraph 4 A: .The number of cell phones in use exploded in the late 1980s and part of the 1990s. B: The number of traffic deaths was reduced in the late 1980s and part of the 1990s due to cell phone use. C: Cell phone users are likely to be involved in traffic accidents. D: The use of cell phones has a life-saving effect for pedestrians and drivers.
- 9） Is this your cell phone number? A: Is B: this C: cell phone D: number
- What is his cell phone number?
- 9） Is this your cell phone number?