As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success.

    Scientists have found out that the radiation（辐射）is the greatest danger to spacemen in space. When spacemen are working in space, they are in danger of the radiation from the sun and other stars, which is bad for their health. The harm of the radiation won't be found until their children even grandchildren are born. Some special medicine may work a little, but no really effective medicine has been found so far.

    Space rubbish is also thought to be a great danger to spacemen. It's reported that there were 9,000 man-made things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish. An explosion（爆炸）in space in 1999 made a cloud of 300,000 fragments, each at least 4mm in size. A small piece of these even knocked a spaceship window and caused some damage（损坏）.

    Scientists are watching and reporting any possible danger all the time. They are working to deal with space rubbish. Although space is really dangerous, it interests many people on the earth. In the near future, it may be possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should do something to help improve the space environment.

要求：（1）请根据提示写一篇不少于80词的短文，开头已给出，不计入总词数；（2）条理清晰，语意连贯，可适当发挥；（3）文中不得出现真实的个人信息。

Our school rules

……

Biomimicry borrows nature's design ideas and applies them to solve human difficulties. Nowadays a lot of companies started to invent in ways that are as elegant as what nature manages to do, and their designers and engineers began to sit with biologists to learn how nature would solve whatever it is they're trying to solve. 

 Some biologists worked with Nike company on apparel(服装）that would keep an athlete cool at the 2004 Summer Olympics. In a hot, dry place like Athens, what kind of organisms have to keep themselves cool and how do they do it? They found an African reed frog——a champion adapter in the heater—to study. 

If a company is making a solar cell , Biomimicry scientists will talk about how a leaf captures energy with their designers. Or if they're looking for some way to create an impact-resistant car, 

Biomimicry scientists will explain how woodpeckers can peck trees all day without harming themselves. 

Companies get the catalog of inspiration from the natural world and create things that sip energy, a city planner, an architect-should take one biology class in school. 

If you take a look at the octopus, you'll notice it moves fluidly and precisely but of course without motors or noisy fans or harmful fuel. The giraffe's vascular system allows it to pump blood up to its head and dip its head without getting dizzy. The humpback whale's flipper has scalloped edges to calm turbulence, and that's being mimicked in a new kind of wind turbine that can rotate in very low wind speeds because of its shape. There's even a new kind of pacemaker based on the heart of the whale. 

One famous biologist once said, 'In nature, failures are fossils. The organisms that are still with us are proven Companies that created a new product inspired by an organism have decided to donate a percentage of their proceeds to conserve the habitats of the organism. 

In ten years, you'll be able to visit ocean parks that have been preserved with the proceeds from a no-heat ceramic recipe based on the abalone's mother-of-pear!

Choose the best answer:

任务A：补全1-4题信息，每空限填一词。

任务B：请你回答问题，在第5题处回答，回答不超过20词。

April 4 marks this year's Qingming Festival, and people across China pay respect to their ancestors (祖先) on this festival. For Chinese people, this festival is not complete without the eating of qingtuan. Qingtuan, or "green ball," is a kind of sweet green rice cake. The food dates back over 1,000 years. In the past, people used it to honor their ancestors. Nowadays, it is enjoyed as a fresh festive food.

Traditionally, the main ingredients include mugwort leaves and glutinous rice flour. People often fill qingtuan with sweet green bean or red bean paste (豆沙). And the stuffing (馅) may also include salted egg yolk and meat.

Many people say the best qingtuan must be handmade. Crushing the mugwort leaves to make the juice is the first step. It's where the green color of qingtuan comes from. The leaves are suitable for eating when young and fresh-only at the beginning of spring. This is why qingtuan is a seasonal food only during the time around Qingming. Next comes the skin. People mix rice flour with hot water and the mugwort juice. Then they put the stuffing into the green skin and wrap it. Finally, cook them for eight minutes and serve!

Today, Qingtuan is not just sweet or salty. More new kinds of Qingtuan can be offered. Some even going viral (网红小吃) because of different fillings and stuffings, such as milk shake, purple sweet potato, Ma Lan Tou, strawberry jam and so on. Take a bite and you'll enjoy the pleasant smell and taste.

Jessie is an eleven-year-old student in Star Primary School (小学). It is a big school with many trees and flowers. There are 220 teachers in it. Sixty classrooms are in the classroom building. And every class has 30 students. 

Here is a map of her school. Let's have a look!

Jessie likes her school very much. But she likes the music classroom best because it is very special. There are some desks in it, but there aren't any chairs. Guess where they sit! They sit on yoga balls. Sitting on yoga balls is so fun. All the students like it very much. In every classroom there are many pictures on the wall and there are many flowers in the front of the classroom. They make the classroom very beautiful.