We have reached peak screen. Now revolution is in the air.

Smart phones were once the best thing to happen to the tech industry. In the 11 years since the iPhone made its debut (初次登台), smart phones     1     (include) just about every other gadget. And it is surprising that it should alter every business.

But     2     smart phones have achieved dominance, revolution is again in the air.

At Google’s and Apple’s recent developer conference, executives took the stage to show how much more irresistible they were making our phones. Then each company unveiled the software     3     (help) you use your phone a lot less.

There’s a reason for this seemingly contradictory engineering effort, and it’s     4     I call “Peak Screen”.

For much of the last decade, a technology industry     5     (rule) by smart phones has pursued a singular goal of completely     6     (conquer) our eyes. Tech has now captured pretty much all visual capacity. Americans spend three to four hours a day looking at their phones, and that’s the minimum estimation.

So tech giants are to build the beginning of something new: a     7     (visual) tech world, a digital landscape     8     relies on voice assistants, headphones, watches and other wearables to take some pressure     9     our eyes.

We may simply end up adding new devices to our screen-added lives,     10     it could change everything again. As I argued, in many ways screens have become too dominant in our lives. The sooner we find something else, the better.

Bioprinting is medically and bio-technologically similar to 3D printing. By using the same principles, the aim is to     1     (rapid) develop living structures similar to human—grown organs and tissue that can be used to treat people or test new drugs. Bioprinting maybe a relatively new field but the results so far are     2     (encourage).

Australian researchers have used neural cells in a custom-made bioink to create a “desktop brain”     3     allows doctors to test brain function, new drugs and study brain disorders. Meanwhile, medicine scientists in the US have created a bioprinter able     4     (construct) ear, muscle and bone structures with the right size,     5     (strong) as well as function for implantation (植入).

One of the primary goals of bio printing is to create functioning organs, for example, hearts.     6     printing compatible (兼容的) organs using a patient’s own cells, the donor     7     (wait) list could become a thing of the past. To get to this point there have been some important breakthroughs in printing vascularized (血管化的) tissue in complex 3D shapes.

Organ printing can improve     8     health of society in general by wiping off the problem of diseases     9     (cause) by organ failure, costly treatments and social care. That promise maybe years away from realization but rapid typing enabled by bioprinting at present     10     (push) medical advances forward at pace.

A model of China's future double-decker bullet train (双层动车) was displayed by the Chinese Academy of Sciences on Monday, with experts     1     (say) it could reach very high speeds.

Zhang Weihua,     2     bullet train expert, told Science and Technology Daily that the double-decker bullet train will be able to run at the same top speed as a fast single-deck train. But an important problem     3     needs to be solved is that it may lose stability when turning at     4     (extreme) high speeds. But he believes that once design and technical problems such as the train's high center of gravity and large passenger capacity (容量)     5     (solve), the     6     (safe) will be fine when the train operates at proper speeds. Recently Germany and France     7     (plan) to use double-decker technology in the next generation of high-speed trains     8     the goal of improving passenger capacity and economic effectiveness.

China's double-decker bullet train, which is made     9     (aim) at the international market, will have a base speed of 160 km/h. However, when fitted with core components (核心组件) designed according to the current standards for high-speed trains, it will be capable of much     10     (high) speeds.

To change bad habits is never easy, even with many     1     (attempt). There is a famous saying     2     (base) on the philosophy of Aristotle: “We are what we     3     (repeat) do.” In many ways, our lifestyle is the sum of choices we have made. We make a choice to do something, and then we repeat it over and over again. Soon that choice becomes automatic and forms a habit that is much     4     (hard) to change. The good news     5     (be) that we can change, if we understand how habits work.

Then what is causing the increase in the global average surface temperature? Climate scientists often mention a key climate process called the “greenhouse effect”,     6     has two common meanings: the “natural” greenhouse effect and the “man-made” greenhouse effect. The “natural” greenhouse effect refers to the fact     7     heat from the sun enters the atmosphere and warms Earth’s surface as short-wave radiation. The heat is released back into space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat,     8     (keep) Earth’s climate warm and habitable. Without this process, Earth could not sustain life. However, the “man-made” greenhouse effect has now become a big problem. When people produce huge amounts of extra greenhouse gases by burning fossil fuels, more heat energy     9     (trap) in the atmosphere and causes Earth’s surface temperature     10     (rise) quickly.