根据《自然保护区条例》的规定，下列关于自然保护区的分区表述中符合规定的是（）。

You _____ be careful when you cross here --- the traffic lights aren’t working.

A、could

B、might

C、ought to

D、may

When the steering gear is in operation, you should ______.

A.check hydraulic oil levels every hour

B.check the rams for overheating

C.check for excessive oil leakage from rams

D.drain water from tele-motor cylinders each watch

A. Privately maintained buoys at a yacht club

B. Government buoys marking the Hurricane Point dikes

C. Barges moored at the Dennis Landing Terminal

D. A pipeline discharging dredge spoil

A．be sure

B．make sure

C．are you sure

D．making sure that

Looking to the Future—2040

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 home 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 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

The author intends to tell us that

A．in 2040 we will live without the lights and heaters

B．In 2040 we will use much more lights and heaters

C．In 2040 there will be no switches of lights and heaters

D．In 2040 lights and heaters will he on and off automatically