题干

ATP是细胞的能量通货,是生命活动直接能源物质,如图为ATP结构和ATP与ADP相互转化的关系式.下列说法不正确的是(  )

A:图1中的A代表腺苷,b、c为高能磷酸键

B:图2中反应向右进行时,图1中的c键断裂并释放能量

C:ATP与ADP快速转化依赖于酶催化作用具有高效性

D:酶1和酶2催化作用的机理是降低反应的活化能

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A

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When you're not at home, many worries may start to crowd your mind. Did I turn the coffee maker off?

Did I lock the door? With a smart home, you can keep all of these worries off.

A smart home is a home with a communication network. This network connects devices (装置), such as lights and TV sets, and allows them to be controlled from far away through electrical wiring, mobile phone communication or WiFi over the Internet.

More and more people may start to consider owning a smart home, because it makes life much more convenient. It can help keep your room at a certain temperature. It can record what happens inside the home and send the video to your phone. When you are on vacation abroad, you can use a smart home controller to switch on or off the electricity when necessary. Some smart homes can receive a visitor, allowing him to come in and offering him a drink. They can even feed the cat and water the plants.

Besides, smart homes are easy to fix. Most smart home technology and devices are wireless and can be set up with a minimum of tools, using only the guiding information. When a problem appears, you can deal with it yourself without paying a professional.

However, for home-users, the smart home technology is far from perfect. It can be rather expensive to own the technology and the devices. Also, because the smart home system (系统) allows its owner to get home information from anywhere, it leaves the home easy to be attacked by hackers (黑客),who may secretly use or change the information in the system.

Now, many scientists are excited at the future of smart home technology. Imagine being able to get fashion advice from your mirror, or receive food shopping suggestions from your refrigerator, while there are others who worry that those smart devices will make people lazier and lonelier. Whatever it is, one thing is for sure — smart home technology will change the way we live and work.