4 . Recycling is a great way of doing your bit for the environment and helping to protect the earth’s precious resources. However, a new study has revealed that our desire to be sustainable maybe doing more harm than good. According to waste company Biffa, this is because of “wish-cycling” — assuming that items such as disposable coffee cup sand pizza boxes will be recycled if put in the recycling bin. In fact, pollution from those items or other non-recyclables can result in recyclable items that have been put in the correct bin going to landfill. David Heaton, a business director at Biffa, said: “Pollution happens when items are disposed of in the wrong bins or haven’t been cleaned before being recycled.”

Experts at Biffa analyzed the amounts of non-target and non-recyclable materials that entered UK material recycling facilities between 2016 and 2020. It was found that, in 2016, the average pollution rate of recycling waste was 13.4 percent, rising over four years to 17 percent by the end of 2020. This shows that, even as people are becoming more eco-conscious, wish-cycling is increasing both in households and businesses.

The Biffa experts say that one of the best ways to prevent pollution of recycling is to clean recyclable waste before putting it in the bin. They suggest cutting off the top of old pizza boxes and only recycling that part to avoid pollution from the grease (油脂). Check the on-packaging recycling label to check it can actually be recycled When it comes to plastics, Biffa recommends checking the resin code, the number in the plastic triangle, to know whether it should go in the recycling bin. In general, resin codes 1, 2, 4 and 5 are recyclable, while 3, 6 and 7 are not. Larger items, like electronics, furniture and batteries, can also be recycled but often can not go in household recycling bins as they need specialist separating. These will need to be taken to recycling centers or sustainable waste management companies.

“It’s vital as a nation that we get better at effective ‘pre-cycling’— sorting waste correctly before collection to reduce pollution rates,” added Mr. Heaton.

5 . I’m a mother of three and a psychologist. Recently, I come to understand what makes childhood valuable in its own right.

One day, when I went to get my 7-year-old son from soccer ________, the kid ________ me with a downcast face. The coach had ________ him for not focusing on his soccer drills. He walked out of the school with his head and shoulders ________ down. He seemed wrapped in ________. But just before he reached the car door, he suddenly stopped, crouching (蹲伏) down to ________ something on the sidewalk. His ________ went down lower and lower, and then, with complete joy he called out, “Mum. Come here. This is the ________ bug (虫子) I’ve ever seen. It has, like a million ________. It’s amazing.” He looked up at me, his features overflowing with energy and ________. “Can’t we ________ here for just a minute? I want to find out what he does with all those legs.”

The traditional view of such a moment is that it is ________, or a waste of valuable time. Yet at that moment it suddenly dawned on me that what sets children apart from adults is not their ignorance (无知) but their ________ for joy. Children’s ability to become deeply ________ in something and get great pleasure is what adults spend the rest of their lives ________.

6 . It’s unlikely that we’ll see a dodo, a flightless bird, walking this earth anytime again, according to Beth Shapiro, a evolutionary molecular biologist.

“When most people think about de-extinction, they’re imagining cloning,” Shapiro said. Cloning, the approach that created Dolly, the sheep in 1996 and Elizabeth Ann, the black-footed ferret in 2020, creates an identical genetic copy of an individual by putting DNA from a living adult cell into an egg cell from which the nucleus (细胞核) has been removed. Adult cells contain all the DNA needed to develop into a living animal. Egg cells then use that DNA as a blueprint to turn themselves into many kinds of cells——skin, organs, blood and bones——the animal needs.

“But no living cells from dodos exist. Instead,” Shapiro said, “you’d have to start with a closely related animal’s genome (基因组) and then change it into one similar to dodos.” For example， mammoths (猛犸) are also extinct，but they were very closely related to modern Asian elephants, so researchers are attempting to bring mammoths back from extinction by creating a hybrid mammoth with some mammoth genes replacing part of the elephant genome in an elephant egg cell. However, there are likely millions of genetic differences between the genome of an Asian elephant and that of a mammoth according to Shapiro.

As for the dodo, its closest living relative is the Nicobar pigeon. Mammoths and Asian elephants are pretty closely related, whereas it had been more than 20 million years since the dodo and the Nicobar pigeon had any common ancestors. Genetic differences between the two bird species are therefore much greater, making it a formidable task to create a successful hybrid in the lab, Shapiro said.

Even if scientists manage to bring dodos back, the island where they once lived is a very different place nowadays, which make it impossible to reintroduce dodos without major intervention.

8 . As a popular tour operator, Travel China Guide designs a lot of China tour packages (旅游套餐) for foreigners with the best-selling travel deals to wonderful must see destinations and offers the best quality services. We warmly invite you to join us on an exciting vacation. Today we will offer you a three days’ private Zhangjiajie in-depth tour.

Welcome to this charming city, Zhangjiajie. Your guide and driver will pick you up at the airport and drive you to the hotel we booked for you ahead of time. The rest time of the day remains free for you to relax.

Today, your private Zhangjiajie tour will start with a visit to the Zhangjiajie Grand Canyon, where you will have a chance to experience the world’s longest and highest glass bridge, Zhangjiajie Glass Bridge. In addition to an unforgettable experience, it will also give you a special angle to enjoy the beauty of the Grand Valley

Afterwards, your guide will lead you to the Baofeng Lake where you will take a scenic boat ride. When you finish visiting the scenic area, the driver will send you back to the hotel.

Today your Zhangjiajie tour will continue to go to the Tianmen Mountain, known as the most beautiful “Hanging Garden” in the world. Tianmen Mountain is named after a natural wonder, Tianmen Cave, which is a naturally formed hole among thousand-metre high cliffs. In addition to this wonder, you may also see different old trees, green vines and rare animals there.

Your three-day Zhangjiajie tour package will come to an end here. You will then be driven to the airport and we will say goodbye there. If you want to have your China tour schedule further, we will be glad to provide detailed information.

9 . One thing that has always attracted us is the food taboos (禁忌). There is one that seems to be acknowledged in the West: the idea that seedless (无籽) fruits are dangerous.

For those unfamiliar with this belief, it seems to go like this. The basic function of fruit in nature is to spread the seeds of the plant to ensure the survival of the species. When fruits are seedless, however, it is meant to be a sign that they want to give up their basic function. According to more extreme views, these fruits not only have fewer vitamins and minerals, but also are actually harmful to humans.

In fact, from the view of science, seedless fruits are the result of a biological development. While it is true that this development can be the result of human actions, it also happens in nature all the time. Often, it is a combination of both.

What effect does the absence of seeds have on nutrition (营养)? Well, seeds do often contain nutrients like fibre, which can mean seed-containing fruits are a little bit higher in fibre. They can also contain potentially beneficial nutrients. This, however, will make a difference only when you eat up the seeds, bite them with your teeth and break the seeds in a digestible form.

Then there is the question of popularity. It doesn't matter how nutrient-packed a crop is if people are unwilling to eat it. While the nutritional difference between seeded and seedless is very small, we know that the sale of seedless fruits has greatly increased since seedless forms were introduced to the market. So when seen in this wider viewpoint, rather than being a loss for nutrition in our diets, seedless fruits have been a gain for us human beings.