The Great Wall is famous as one of the miracles in the history. 它吸引了来自世界各地的人     1    to witness its greatest. But according to the research, the Great Wall is missing gradually     2    , for it suffers the damage from both nature and human beings.

As the environment is polluted, the acid rain often comes and destroys the buildings in the long run. What’s more, the increasing number of tourists step on the bricks, 这会损害建筑    3    . More and more bad behaviors have been reported,    4     such as people like to write down some words to remember their trips here, which disfigures (损毁) the appearance of this great site.

If the Great Wall disappears some   day,it is the greatest pity, and we are no longer have the chance to appreciate its grandness. To save this miracle,我们必须保护环境    5    .

It is just past five o’clock on the Chinese New Year’s Eve, and Luo Yan lifts the cover of a large bowl to breathe in the rich smell of the soup     1     his wife and mother have prepared.

Luo Yan and his wife and son have settled in the big city far away from their hometown. Their journey from the city where they live and work back to their hometown was a     2    漫长而又疲乏的 one just a few years ago. However,     3     the high-speed train has made it more convenient for them to go back home. During the four-hour trip, they chatted happily with each other.

    4    一到家, they find Luo’s parents eagerly waiting for them. Indeed, the family couldn’t be happier to be together. As midnight approaches, Luo Yan takes his parents, wife and son outside to set off firecrackers.     5     The whole village is lit up with the flashes of fireworks.

These days, we still need to wear masks because of COVID-19 when we go to some places like hospitals and supermarkets. It becomes a rule. We use lots of masks every day. But do you know a lot of them may end up on the streets, in the parks, or even in the rivers?     1     这对我们的环境是有害的。

A company in Cornwall, Britain came up with a good idea to solve the problem.

    2     他们能把用过的口罩变成有用的东西。 First, they collect used masks. Then, they remove the straps and wires.     3     After that, they put masks into a special machine. The masks turn into big blocks. At last, they break these blocks into small pieces and make litter pickers (捡拾器) with the pieces.     4     It is said that every 45 masks can make one litter picker.

Now in Cornwall, over 300 schools get these litter pickers.     5     Students can use them to help clean up their streets and parks. “The picker is made from masks. Now I can pick up a used mask with it. I think it’s really cool,” says a schoolgirl.