【单选题】
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。
Driving needs sharp eyes, keen ears, quick brain, and coordination between hands and the brain. Many human drivers have all{{U}} (51) {{/U}}and can control a fast-moving car.But how does an intelligent car control itself
There is a virtual driver in the smart car. This virtual driver has "eyes", "brains", "hands" and "feet", too. The minicameras {{U}} (52) {{/U}} each side of the car are his "eyes", which observe the road conditions ahead of it. They watch the{{U}} (53) {{/U}}to the car’s left and right. There is also a highly{{U}} (54) {{/U}}driving system in the car. It is the built-in computer, which is the virtual driver’s "brain". His "brain" calculates the speeds of{{U}} (55) {{/U}}moving cars near it and analyzes their positions.Basing on this information, it chooses the right {{U}} (56) {{/U}}for the intelligent car, and gives{{U}} (57) {{/U}}to the "hands" and "feet" to act accordingly. In this way, the virtual driver controls his car.
What is the virtual driver’s best advantage He reacts {{U}} (58) {{/U}}. The minicameras are {{U}} (59) {{/U}} images continuously to the "brain." It {{U}} (60) {{/U}} the processing of the images within 100 milliseconds. However, the world’s best driver {{U}} (61) {{/U}} needs one second to react. {{U}} (62) {{/U}}, when he takes action, he needs one more seconD、
The virtual driver is really wonderful. He can reduce the accident {{U}} (63) {{/U}} considerably on expressways. In this case, can we let him have the wheel at any time and in any placeExperts {{U}} (64) {{/U}} that we cannot do that just yet. His ability to recognize things is still {{U}} (65) {{/U}} He can now only drive an intelligent car on expressways.
B．few
C．untested
D．limited
网考网参考答案：D
网考网解析：
本句是给出目前不能let smart car have the wheel at any time and in any place的原因。原因是它的能力limited(有限)。对smart car的能力一无所知(unknown)或是没有测试过(untested)，显然与前文的意思不符。few只能与可数名词搭配，ability在本句中是不可数名词，所以，few也不是答案。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
发布评论 查看全部评论