1 . In one of the more unusual experiments we’ve seen recently, researchers attached a large pair of cartoonish huge eyes to the front of a small, self-driving vehicle—and it turns out that this kind of adaptation could actually improve pedestrian (行人) safety.

A pair of eyes on the front of driverless vehicles could, according to the researchers, give people standing by the road a better idea of whether they’ve been seen. That’s one useful bit of information to have when it comes to determining the perfect moment to cross in front of oncoming traffic. “If the car is not looking at the pedestrian, this implies that the car does not recognize the pedestrian,” said one of the researchers. “Thus, pedestrians can judge that they should not cross the street, thereby avoiding potential traffic accidents.”

For the purposes of this study, the researchers used a car which seemed as if no one was inside. A pair of large, swiveling (旋转的) eyes on the front were controlled by researchers, but in the future could be controlled by the car’s AI on an actual self-driving vehicle.

To keep the 18 participants safe, experiments were conducted in virtual reality. The volunteers—nine men and nine women—were asked to decide whether or not to cross the road as the car approached. Four scenarios(方案) were tested in total; two when the car was fitted with eyes, and two when it wasn’t. The researchers measured how often people hesitated to cross when it was in fact safe to do so, and how often they chose to cross when it was dangerous. Overall, the presence of the eyes led to safer and smoother crossing experiences for the participants.

However, there was a gender split in the results. For men, the eyes only really helped in dangerous situations, warning them to pause when they might otherwise proceed. For women, the eyes boosted confidence by signaling it was safe to cross.

1. What is the function of cartoonish huge eyes?

A．Improving the safety of self-driving vehicles.

B．Helping people decide when to cross the road.

C．Keeping pedestrians in a complete safe state.

D．Promoting the appearance of self-driving vehicles.

2. What can we know about the experiments?

A．There was a robot in the car.

B．The pair of large eyes were controlled by AI.

C．The experiments were designed by 18 volunteers.

D．Experiments weren’t conducted in real surroundings.

3. What is the author’s attitude toward the conclusion of the experiments?

A．Doubtful.

B．Objective.

C．Negative.

D．Positive.

4. Why does the author write the text?

A．To advertise a new self-driving technology.

B．To enhance pedestrians’ awareness of safety.

C．To inform us of a new research on driverless vehicles.

D．To introduce the influence of a new type of car.

2 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

After nearly four years of construction, China’s longest underwater highway tunnel, the Taihu Tunnel, is now open to vehicle traffic.

Construction workers used over 2 million cubic meters of concrete to build the two-way tunnel,     1     has six lanes (车道) and is 43.6 meters wide. The ceiling of the tunnel is equipped     2     colorful LED lights, designed     3     (prevent) drivers from getting tired. At a length of 10.79 kilometers, it provides     4     (traveler) with an alternative route to journey between Shanghai and Nanjing.

Connecting Suzhou, Wuxi and Changzhou, it was built to reduce traffic pressure on the cities next to Lake Taihu and promote me economic     5     (develop) of the cities in the Yangtze River Deltz.

So how good is the Taihu Tunnel     6     (compare) with other tunnels around the world? The world’s longest undersea road tunnel---Norway’s 14.3-kilometer Ryfast     7     (run) between the city of Stavanger and the area of Solbakk. The underwater tunnel part of the Tokyo Bay Aqua-Line,       8     highway that travels under Tokyo Bay, is 9.6 kilometers. In terms of underwater tunnels, the top honor     9     (certain) goes to the Channel Tunnel, which connects England with France by rail.     10     (it) underwater part runs for 37.9 kilometers, the longest of any underwater tunnel in the world.