7 . Why is Eating Colourful Food Good for You?

Most of us are faced with the same choice numerous times a day: what to eat. Along with price, accessibility and preference, we’ll often use a food’s healthfulness to help us make a decision.     1    

It’s widely accepted by researchers that we need a varied diet.     2     The proof may be in the Mediterranean diet, which contains a lot of fruit, vegetables and healthy fats such as extra virgin olive oil, and is frequently rated the healthiest diet by scientists.

Eating lots of colours may lower your risk of missing out on all vital nutrients. “If we’re missing a colour of the rainbow, we may be missing a function of that food, “ says Minich. This is because plant foods contain thousands of natural compounds, which have anti-infiammatory(抗炎的)benefits.

    3    

Blue and purple foods, including blueberries, have a high content of the plant anthocyanin(花青素), which has been linked to lowering the risk of heart disease and type 2 diabetes.

A research fellow at Harvard TH Chan School of Public Health says eating a colourful diet can also help people avoid possible side effects of eating too much of one food. “    4     For example, research has found that orange juice is associated with a lower risk of cognitive decline, but too much intake is associated with type 2 diabetes, ” she says.

Eating a rainbow diet may also be complex.     5     We could tie ourselves in knots. We also   need to eat from other food groups to get all the nutrients we need, such as protein.

8 . We Are Cyborgs

RoboCop, the Bionic Woman, Darth Vader—what do these characters have in common? They are all cyborgs—humans who are made more powerful by advanced technology. You might think that cyborgs exist only in fiction, or are a possibility only in the distant future. But cyborg technology already exists.

The word “cyborg” was first used in 1960 and defined as an organism(有机体) “to which external parts have been added for the purpose of adapting to new environments”. According to this definition, an astronaut in a spacesuit is an example of cyborg, as the spacesuit helps the astronaut adapt to a new environment—space. More recently, the word has evolved(进化)to refer to human beings who have mechanical body parts that make them more than human.

Although super-humans like RoboCop are not yet a reality, advances in real-life cyborg technology allow some people to compensate(弥补)for abilities they have lost, and give other people new and unusual abilities. An example is filmmaker Rob Spence and his bionic eye. Spence injured one of his eyes in an accident. A camera was implanted(移植)in his prosthetic eye. The eye is not connected to his brain or optic nerve(视神经), but it can record what he sees. Spence has used his camera eye to record interviews for a documentary about people with bionic body parts.

Some types of cyborg technology replace a lost ability by connecting directly to a person’s nerves. Michael Chorost completely and suddenly lost his ability to hear in July of 2001. Two months later, doctors placed a cochlear(耳蜗)implant, a kind of computer, inside his skull. This type of implant connects to auditory nerves and allows a deaf person to hear again. Around the world, over 300,000 people have now been fitted with cochlear implants.

These examples of cyborg technology have enabled people to enhance or change their abilities and improve their lives. But does everyone want to use cyborg technology? It might be too late to decide. Cyborg scientist Amber Case argues that most of us are already cyborgs. Anyone who uses a computer or a smartphone, Case claims, is a cyborg. Consider the data that you have in your smartphone. It keeps information for you so you don’t have to remember it: notes, phone numbers, email addresses, messages. It also allows you to communicate with friends and family via telephone, text messages, email, and social networks.

The potential benefits of cyborg technology are evident, but can this new technology be harmful, too? Could we become too dependent on cyborg technology—and become less than human? These still remain questions.

10 . I believe even the smartest people have to work hard to achieve success. People make themselves into winners by their own _______.

Many years ago, I took the head _______ job at a school in Baxley, Georgia. It was a tradition for the school's old team to play against the _______ team at the end of spring practice. The old team had no coach, and they didn't even practice to _______ the game, but to my disappointment we were defeated. Thinking hard about it, I came to _______ that I had to change my _______ towards their ability and potential.

I started doing anything I could to help them build a little _______. Most importantly, I began to treat them like _______. That summer vacation, we met every day and _______     passing and kicking the football.

Six months after our defeat, we won our first game and our second, and continued to ________ . Finally, we faced the number one team in Georgia. I felt that it would be a ________ for us even if we lost the game. But my boys beat them , giving me the greatest ________ of my life!