【推荐1】How many things can you see in the night sky? A lot! ______ a clear evening you might see the Moon and some planets. And ______ sparkling stars can be seen, too.

You can see even ______ with a telescope. You might see stars where you only saw dark space before. You might see ______ many stars look much larger than others. You might see some stars look white are really red and blue ______.

But scientists believe there are some ______ things in the sky that we never see. We ______ see them with the biggest telescope in the world, even when it is the clearest night of the year. That’s because they are the dead stars, which ______ black holes. You might find ______ hard to imagine stars die. After all, our Sun is a star. Year after year we see it burning ______ in the sky, giving us heat and light. The Sun doesn’t seem ______ getting old or weak. ______, stars do burn out and die after billions of years. As a star’s gases are ______, they give off light and heat. But when the gases run out, the star stops ______ and begins to die.

So the next time you stare up at the amazing night sky, remember: there is more in the sky than that meets the eye. ______ wonderful place it is!

【推荐2】We know the Moon is our satellite（卫星）. It ________ round the Earth day and night. It ________ around once a month, every 29 and a half days.

The Moon is our ________ neighbour in space. It is ________ than the Earth. Plants can’t grow on the Moon ________ there is no air on it.

The Moon hasn’t ________ own light. It shines back the light of the Sun. When the Sun is shining on one side of the Moon, it looks like ________ big bright round ball. We can’t see the Moon when the Sun is shining on ________ side.

In fact, the Moon isn’t as near as it looks. It’s difficult for scientists to study on the Moon, but they will never stop ________ on it. I hope one day, we can take a trip to the Moon. It must be fun ________ into space.

【推荐3】“Hello, everyone! Welcome to Tiangong Class.” With this greeting, a special lecture began _____ Tiangong space station on Dec 9.

Lasting for about _____ hour, the space lecture was broadcast live to the students. “Three astronauts from the Shenzhou XIII crew — Zhai Zhigang, Wang Yaping and Ye Guangfu — hosted the lecture, showing _____ there and doing some interesting experiments that can only _____ in space. This is the second live space lecture in China. In 2013, with the help of other Sheinzhou X crew members, Wang decided _____ a speech to over sixty _____ schoolchildren across China.

Compared with the class eight years ago, this year’s space lecture is greatly different. According to Pang Zhihao, a Beijing-based space expert, the “classroom” is much _____. Instead of Tiangong I experimental module, this year Wang delivered the space lecture in the Tianhe space core module (核心舱) which is the biggest spacecraft developed by China.

Eight years ago, Wang _____ students the laws of physics and focused on the interesting phenomenon (现象) of weightlessness (失重) in space. _____ this year, biology was added. The astronauts compared the growth and shape of cells in artificial gravity (人工重力) and zero gravity in order to study their changing rules and mechanisms (机械装置).

“The spirit of science in the youth is an important driver of the progress of mankind,” Zhou Jianping, designer-in-chief of China’s manned space program; added. “Space activities can help _____ build the spirit of pursuing science and facing challenges.”

Some food is so delicious that many foodies(吃货) would like to try. But sometimes, it may put themselves in great danger.

One day, three men were in a hospital, feeling tired and weak. They couldn’t speak and had trouble ________. The doctors couldn’t find out what was wrong with the men ________ they found the three men were all fishing lovers, and they had just shared a dish of fugu（河豚）.

Fugu is one of ________ fish in the ocean. It gets its name from the way the fish protects ________ from enemies. Whenever it is attacked, the fish blows up its body to over twice its normal size！The reason why the three men ________ to hospital is because fugu is also very poisonous（有毒的）. As a rule, if you eat a whole fugu, probably you ________. Luckily, the three men survived.

Although fugu is poisonous, it’s expensive and welcomed by many people. In order to eat ________ fugu meal, customers have to pay up to $200 per person. However, because of the danger, fugu can only be prepared by ________ with a special license from the government. They are trained to remove the poisonous parts of the fish. Most people that died from eating fugu were people ________ had tried their hand at preparing the fish themselves.

In fact, because of its good taste, it ________ popular since Song Dynasty. Our great poet Su Shi was one of its fans. However, we should always remember that food safety comes first!

Where did you go yesterday? Did you hear music at any of those places? Today most stores and restaurants ________ music. You might even hear music in ________ office or on a farm.

Scientists believe that music change people’s behavior（行为）. According to some scientists, the sound of western classical music makes people ________ richer. When a restaurant plays classical music, people spend more money ________ food and drinks. When the restaurant plays modern music, people spend less money. However, people spend even less without music.

Scientists ________ believe that loud fast music makes people eat faster. In fact, people eat their food ________ when music gets faster. Some restaurants play fast music during ________ busy hours. This gets people to eat faster and leave quickly. Restaurants can make more money in this way.

Some scientists think that music makes you think and learn better. They say that music helps ________ to become more active in class. It is true that people can learn better when they are relaxed. ________ listening to music can help you relax.

The next time you hear music ________, be careful and think about that. It might change the way you do things.