1 . The human brain remembers negative experiences more easily than positive ones. Our brains have developed in this way because threats, like dangerous animal, have a more immediate effect on people's survival compared to positive things like food or shelter. As a result, you clearly know what makes you unhappy, but do you know what makes you happy?
Research suggests that our level of happiness is partly shaped by the choices we make. If you've been chasing wealth, fame, power and some material things, you may be looking for happiness in the wrong places. Psychologists suggest that the following habits can make people happier.
People who own close relationships tend to be happier than those who do not. The number of our friends is not important. What matters is the quality of our relationships. Relationships that bring happiness usually consist of the sharing of feelings, acceptance, mutual respect and trust.
People who exercise regularly can improve both their physical and mental well-being. Some research has shown that exercise can be as effective as some medicine in treating depression.
If we are so interested in an activity, we may lose track of time, and we can be in a state of flow. The activity could be playing the piano, surfing the Internet or playing a game. People who experience flow in their work or life tend to be happier.
People are more likely to be happy if they know what their strengths are and can use them regularly. People are especially happy when they can set goals and use their strengths to achieve them.
People, who think positively by being grateful, mindful and optimistic, are more likely to be happy. Being grateful means being thankful. Being mindful means considering, focusing on, and enjoying the experiences of the present moment. Being optimistic means being hopeful about the future.
1. Human brains remember negative things more easily because negative things_________.| A．tend to affect human survival immediately |
| B．are much more important than other thing |
| C．can make people live much happier |
| D．are easy to remember |
| A．being famous | B．setting life goals |
| C．chasing power | D．earning money |
| A．think more about our future |
| B．focus on everything in our life |
| C．be positive in our life and work |
| D．only enjoy the present moment |
| A．Why people remember positive things easily. |
| B．Why people remember negative things easily. |
| C．What makes people happy. |
| D．What makes people sad. |
2 . Few people can refuse a delicious ice cream, especially on a hot day. The only thing that stops the fun is that the treat is hard to enjoy slowly, ending up with a sticky, melted mess. Now, researchers from Colombia’s Pontifical Bolivarian University may have found an unlikely thing to help solve this age-old problem — a kind of fibre from banana plant waste.
Bananas, as you probably know, grow in groups on a tree-like plant. Each group is connected to a central rachis (叶轴), which is thrown once the fruit has been gathered. The team, which was led by Dr. Robin Zuluaga Gallego, began by abstracting /drawing out cellulose nanofibrils (CNFs) from the powdered rachis. The tasteless fiber, thousands of times smaller than the width of a human hair, was then added to 100 grams of ice cream mix.
With the right amount of CNFs mixed in, the dessert lasted longer in its frozen state than the traditional ice cream, extending the amount of time that the treat can be enjoyed. What was even more exciting was that the fibre increased the stickiness of the low-fat ice cream to levels higher than the full-fat one. Since this is what determines the frozen treat’s creaminess and taste, CNFs could help create the healthier ice cream without influencing the taste of it.
The researchers, who presented their findings at the American Chemical Society( ACS) meeting in New Orleans in March, 2018, next plan to study how different types of fat, such as coconut oil, influence the behaviour of CNFs in other frozen treats.
The Colombian researchers are not the only ones working on creating a slower-melting ice cream. In 2015, scientists at the University of Dundee in Scotland found that a natural protein called BsIA was very effective in keeping the treat frozen for longer periods of time. With both teams fighting to be the first to get to the market, the future of everyone’s favorite dessert certainly looks bright.
1. What prevents people enjoying an ice cream slowly?| A．A kind of fibre from bananas. |
| B．The ice cream’s quick melting. |
| C．The ice cream’s stickiness. |
| D．The fat in the ice cream. |
| A．To improve its taste. |
| B．To increase its stickiness. |
| C．To reduce its fat content. |
| D．To make it melt more slowly. |
| A．The ice cream. | B．The fiber. |
| C．The fat. | D．The stickiness. |
| A．BsIA is popular in the market. |
| B．CNFs are more useful and expensive than BsIA. |
| C．Ice creams with CNFs have been on sale at the market. |
| D．Slowly enjoying an ice cream will soon become a reality. |
