Is there life beyond(在……之外) the Earth? Many people are interested in this question and try _______ out the answer.

_______ April 28, 2020, China’s radio telescope(射电望远镜) FAST _______ to look for aliens.

Radio telescopes _______ find signals(信号) from space. On the Earth, _______ TVs and radios give out signals. Scientists _______ that if there are aliens beyond the Earth, their technology would also give out signals like ours does.

Many radio telescopes _______ the world are being used to look for aliens. In 1977, for example, the Big Ear radio telescope in the US found _______ strong signal from space. Many _______ believe it may have come from aliens.

FAST is the world’s largest and most sensitive radio telescope. ________ can find even the weakest signals from space. Scientists are ________ about what it might find in the future.

Finding aliens might sound exciting, ________ some scientists think that we should not contact(联系) aliens. For example, the famous British scientist Stephen Hawking believed that aliens ________ dangerous. ________ they find us, they might take resources from the Earth. That would be very bad ________ us. What do you think?

Do you have a dream of going to the Moon? In July 1969, two astronauts from the US walked on the Moon. Their names were Neil Armstrong and Buzz Aldrin. If you visit the Moon today, you will still be able to _______ their footprints! They also left behind the _______ flag.

When the astronauts went to the Moon, they needed to _______ spacesuits and helmets (头盔) to protect themselves, because sometimes the Moon is very _______ or very hot. The helmets also helped them breathe because there is no _______ on the Moon.

Do you know that if you weigh 70 pounds on Earth, you will weigh only 11.5 pounds on the Moon? And if you go for a _______ on the Moon, you will jump with each step. Here is a (n) _______ thing about the Moon: Do you know that the Moon is like a mirror? It reflects (反射) the _______ of the Sun and _______ it to the Earth. And that makes the Moon look __________ and beautiful! Don’t you agree we have a beautiful Moon?

This is Tammela School, a primary school in Finland.     35    

The “teacher” is a small, blue machine about 25cm high, Reuters reported. Whenever students have problems, it helps them very patiently and never gets bored.

“    36     I see Elias as one of the tools (工具) to get different kinds of practice and activities into the classroom,” a teacher told Reuters.

So far the school has introduced four robot teachers. One of them is a language teacher.     37     “It is necessary to encourage (鼓励) kids to come up with new ways to make use of technology in school life,” the head of the school added in the interview.

The robot teachers are used to help improve learning.     38     The robots can teach well, but they are not able to keep class in order.     39    

50. 假如下周你所在的班级将开展为期一周的研学活动。请根据下面表格中的要点提示用英文写一则通知告知全班同学。

May I have your attention, please?

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That’s all. Thank you!