Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35.

Driving along the motorway in busy traffic, the driver presses a button on the steering wheel. The car is now driving itself. This may sound like science fiction, but driverless cars are already on the roads in California.
Many cars can already park themselves by the side of the road, brake automatically when the car needs to slow down, and warn the driver if they are slipping out of the correct lane, so going driverless is just the next step. Driverless cars come with fast broadband, allowing them to overtake other cars safely, and even communicate with traffic lights as they approach junctions.
Being stuck in traffic jams could become a thing of the past, as driverless cars will be able to drive at speed much closer to each other. More than fifty million people die or are injured in road accidents every year, and 90% of these accidents are caused by human error. Google's driverless car sticks to the speed limit and doesn't get tired. So wouldn't it be much safer if all cars were driverless?
(Adapted from Navigate)

Câu hỏi

The word them in paragraph 2 refers to _________.

Đáp án
B. driverless cars

Câu hỏi thuộc Bài tập:

ĐỀ SỐ 14 - VŨ MAI PHƯƠNG