He switched off the light and was about to le...

He switched off the light and was about to leave the classroom and only then____ to rain heavily.

A. it began　　 B. it begins

C. does it begin　　 D. did it begin

高三英语单项填空中等难度题查看答案及解析

If you’re still pressing a switch to turn your lights on and off, you’re a bit behind the times. As the rest of your home gets smarter, why shouldn’t your lights? The smart light switch can let you turn your lights on and off from almost anywhere with your smart phone.

Lutron Caseta

The Lutron Caseta comes with a convenient remote control and combines perfectly with most major smart home services. It is an all-around option. Whether your device is Apple HomeKit, Amazon Echo, Google Home, Nest, or IFTTT, you can use the Lutron Caseta fluently, which makes it stand out from its competitors.

WeMo Smart Switch

The WeMo smart switch can be used to control the brightness in a room just by running your finger in the center of the switch. What makes it stand out, though, is its Long Press feature, which allows you to start another smart device by holding the switch for two seconds. For example, you can link it to your robot cleaner, which will start cleaning after you press the button.

TP—LINK Kasa

Like other smart models, the TP—Link Kasa is equipped with plenty of practical features, including timers and voice controls from Amazon Alexa or Google Home. It has an “Away Mode” that randomly turns the lights off and on to give the false idea that you are at home when you’re not, to prevent potential thieves. All in all, it’s an affordable and reliable option you’ll love.

Philips Hue Smart Dinner(调光器) Switch

The Hue allows you dim your bulbs, set schedules, and control the lights with your voice. Best of all, it offers incredibly easy installation—with no wiring necessary.

1.Compared with its competitors, the Lutron Caseta ______________.

A.can apply to many kinds of devices

B.can just be used to control lights

C.has a price advantage

D.is easy to install

2.The “Away Mode” of the TP—LINK Kasa is intended to _____________.

A.be equipped with more practical features

B.guard the house against possible burglar

C.turn the lights off and on when you are away

D.control an app remotely

3.What’s the writing purpose of the text?

A.To ask people to catch up with times.

B.To advise some smart light switches.

C.To introduce a new lifestyle.

D.To compare some smart light switches.

高三英语阅读理解中等难度题查看答案及解析

He was about to leave the office for home _______someone knocked the door and asked for some help.

A. until        B. while            C. as            D. when

高三英语单项填空中等难度题查看答案及解析

--Alice, turn off the light and lock the door before you leave.

-- ______.

A. Got it                                                             B. Made it

C. Heard it                                                              D. Taken it

高三英语单项填空中等难度题查看答案及解析

. — Mary, turn off the lights and lock the door before you leave.

—________.

高三英语单项填空简单题查看答案及解析

Mr. Smith found that gas         from the pipe when he came back because we forgot to switch off. But at last we were lucky to escape           .

高三英语单项填空简单题查看答案及解析

Better _____ all the lights are turned off before you leave the classroom．

高三英语单项填空中等难度题查看答案及解析

Class regulations state _____ is the last to leave the classroom _____ off all the lights.

A．no matter who; should turn               B．whoever; shall turn

C．whomever; turns                       D．whoever; turn

高三英语单项填空困难题查看答案及解析

Class regulations require ______ is the last to leave the classroom ______ off all the lights.

A. who; should turn                 B. whomever; turn

C. whoever; turning                 D. whoever; turn

高三英语单项填空中等难度题查看答案及解析

.He was about to leave ______the telephone rang; ______was from his mother.

高三英语单项填空中等难度题查看答案及解析