【推荐2】One thing that everyone has to do in order to survive is eat food and drink water. Along with air, food and water are the two other key elements (要素) that we need in order to allow our bodies to work.     1     However, it is well recommended that you eat a very well-balanced meal so that you can let your body work fully. One important area you should always keep track of is fruits.

The first fruit that will be discussed is the all-powerful apple. As the saying goes, “An apple a day keeps the doctor away”. This is a scientifically tested fact and it is always a good idea to eat an apple a day just for the good natural goodness found in apples. An apple has about forty-nine calories (卡路里) and about eighty-four percent water. It also has many key elements such as sugar.     2    

    3     Bananas are really good to eat for several reasons. They are good for your skin and the inside of your body as well. A banana has about eighty-eight calories and about seventy-six percent water.     4     And they also have a small number of other all-important vitamins (维生素) such as vitamins A, B, C, and E.

Those two fruits are the most popular fruits that people eat more than other fruits.     5     One fruit can be better for you in one area of your health, while the other fruit is good for you in another area.

【推荐3】Wasting things is a nightmare (噩梦) for the environment, especially food waste, which does double harm to the environment. A plenty of resources go into the food and the food system also produces lots of greenhouse gases and pollution.

In our homes, restaurants, and food shops, 17 percent of all our food is thrown away—that’s about a sixth of all of the food we have. If you add on the food lost in production, about a third of all food produced never reaches a mouth. At the same time, nearly 700 million people were affected by hunger in 2019, while 3 billion still struggle to afford healthy food. It is mostly households that are to blame: 11 percent of the food ends up in the trash of our homes, compared to a mere 5 and 2 percent from stores and restaurants.

The reasons why food goes to waste are probably familiar to you: dinner party leftovers that never get eaten, food going bad before you cook it, or simply confusion over sell-by and use-by dates that leads to totally fine food ending up in the garbage.

The UN aims to cut food waste in half at the consumer and sale levels by late 2022. Luckily, there’s actually a lot we can do as individuals and governments can make policies to help people and the environment a lot. For individuals, something important is being more thoughtful and prepared when going to the grocery store. Make a list of meals you want to cook, and then only buy fresh produce that you will 100 percent be eating in the next few days. In social aspect, improving education on how to preserve food and understand tricky labels (标签), encouraging food recycling and pushing companies to sell smaller quantities of healthy, fresh food for one or two people could all play a helpful role in bringing down the massive pile of eatable waste.

【推荐1】Perhaps the following scene is familiar to you: You smell a certain fragrance on one of your friends or colleagues.     1    However, upon applying said fragrance to your own skin, you are disappointed to find its scent is suddenly not so fabulous.

Although the concept of a fragrance smelling different on the skin of two different people may seem strange to some, it is actually something well known in the perfume industry.    2    

First, the word “perfume” is most commonly used to describe fragrances for the skin; however, it can also refer to other fragrant substances.    3     Eating herbs and spices affects your natural smell, which in turn influences any additional scents you apply to your body. Also, people’s hormone(荷尔蒙) levels vary throughout their lives.    4    This also affects that individual’s natural smell and thus their perfume’s smell. Lastly, some people have a neutral’ skin type meaning their skin is neither very oily nor very dry. For such people, the scent of an applied perfume may seem largely unchanged.     5    Naturally, this changes a perfume’s scent.

In summary, do not be surprised the next time a perfume’s scent changes when you wear it. Make sure to always try a perfume on your skin before purchasing it to learn how its scent will react to you.

【推荐3】Here are some things you might not know about black boxes.

They’re not black. Black boxes are the same colour as the Golden Gate Bridge in San Francisco.     1    . The Golden Gate Bridge is a darker shade, while the international orange used for black boxes is much brighter.

A black box comes in two parts. The black box is made up of two separate pieces of equipment: the flight data recorder (FDR) and a cockpit voice recorder (CVR). They are compulsory on any commercial flight or corporate jet. They are usually kept in the tail of an aircraft.     2    . The FDRs record things like airspeed, altitude, vertical acceleration and fuel flow. The CVRs track not only the crew’s interactions with each other and air traffic control, but also background noise that can give vital clues to investigators.

    3    . Black boxes start emitting (发出) a pulse if their sensors touch water. They work to a depth of just over four kilometers and can “ping” once a second for thirty days before the battery runs out. If a flight crashed into the ocean, it might take search teams a few years to find and raise the black boxes. However, they are worthy of the time.     4    .

They’re almost undestroyable. The FDRs are usually double-wrapped in titanium or stainless steel.     5    . The crucial part that contains the memory boards can bear a 227 kg weight with a pin attached to it, which is dropped onto the unit from a height of three meters. Researchers try to crush it, destroy it in an hour of 1,100 degrees Celsius fire, submerge it in a pressurized salt water tank and immerse it in jet fuel.