Do you forget to turn off the lights and heaters when you go out of a room? In 2040 it will not matter. They will turn themselves off and on again when you return. You will choose the temperature for each room, the lighting and the humidity. A sensor will detect the presence of a human(and, with luck, ignore the dog!)and turn the systems on, and when the humans leave it will turn them off again. The sensors will work through the central computer, and they will do much more than just turn the fires and lights on and off for you. They will detect faulty electrical appliances, plugs or switches, isolate them so that they cannot harm anyone, and then warn you that they need repair. They will detect fire and if you are out of the house, the computer will call the fire brigade. It will also call the police should the sensors detect an intruder. This will not be too difficult because the locks on the outside doors will be electronic. You will open them using your personal card—the one you use for shopping—maybe using a number known only to you. It will be impossible to lose the key, and a housebreaker will have to tamper(拨弄)with the lock or with a window. It is not very difficult to make such tampering send a signal to the computer. The computer will be more than a fireman-policeman-servant. It will be an entertainer, and most of your entertainment will come right into your home. It does now, of course, but by 2040 "entertainment" will mean much more. For one thing, you will be able to take part actively, rather than just watching.
单选题
The author intends to tell us that______.
【正确答案】
C
【答案解析】解析：文章第一段提到“In 2040 it will not matter．They will turn themselves off and on again when you return．”到2040年时，这样的事情发生也不要紧。它们会自动关闭，你返回时它们又会自动开启。可见C项符合文章的意思。D项不对。至于A项和B项文中并没有说到电灯和加热器没有了或是用得更多。所以应该选C。
单选题
Which of the following statements is NOT true?
单选题
According to the author, in 2040, new technology______.
【正确答案】
B
【答案解析】解析：通过第二段我们知道中央电脑不仅可以自动开关、检查故障、提醒维修，还可以防火、防盗、自动报警，并且设有电子门锁，用我们平时的购物卡或仅用一个密码来开门。可见，我们不用现在的钥匙，而是用更加先进、更加安全的卡或密码。所以B正确，C不正确。A项在文中没有提到。第二段中提到“It will also call the police should the sensors detect an intruder．”如果传感器发现了非法入侵者，电脑也会报警。可见，文章讲新技术增强了防盗功能，并没有说会消除犯罪，D项也不对。所以应该选B。
单选题
Thanks to computers, in 2040 people______.
【正确答案】
D
【答案解析】解析：文章最后一段提到， “It will be an entertainer，and most of your entertainment will come right into your home．”它还将提供娱乐，你的大部分娱乐活动将直接进入你的家庭。可见，更多的娱乐活动将在家里进行，D项的内容与之相符。文中只是说更多的娱乐活动将在家中进行，但并没有提到不在外面进行娱乐活动。所以A项不对。B项的内容文中没有提到。第二段中只是说传感器通过中央电脑进行工作，不能由此推出以后人们将由电脑控制。所以C项也不对。因此本题的正确答案为D。
单选题
The best title for the passage might be______.