一、根据中文或首字母提示写出单词。
1. Children should know how to guard against dangers from (陌生人).
2. — How long does it take the Earth to (环绕)around the Sun once?
— About 365 days.
3. An (外星人)got out from a UFO and walked down Centre Street.
4. I like living in the city though I know the (劣势)of living in the city.
5. We don't want to run the r of losing their business.
6. The p of the students who would like to move away from the Earth is 50%.
7. — A survey about protecting the Earth was c out in our school last Friday.
— I hope more events like this will be held.
8. — How is AI affecting our daily lives? — The AI technology is r changing all the time.

1. strangers 2. circle 3. alien 4. disadvantages 5. risk 6. percentage 7. carried 8. rapidly

1. "陌生人"对应英文"stranger"，此处需用复数形式strangers。
2. "环绕"对应英文"circle"，"It takes sb./sth. to do sth."结构中用动词原形circle。
3. "外星人"对应英文"alien"，前面有不定冠词An，用单数alien。
4. "劣势"对应英文"disadvantage"，此处用复数disadvantages表泛指。
5. "run the risk of"为固定短语，意为"冒……的风险"，填risk。
6. "The percentage of..."表示"……的百分比"，填percentage。
7. "carry out"意为"开展，进行"，此处为被动语态，填过去分词carried。
8. "rapidly"意为"迅速地"，修饰动词changing，填rapidly。

二、用所给单词的适当形式填空。
1. — We are worried about (live)in such a noisy and polluted place.
— We'd better look for another hotel.
2. — You look tired. What are your (worry)?
— I have too much homework... and the math test tomorrow!
3. — The number of wild animals is becoming smaller and smaller.
— To prevent people from (harm)wild animals, the government has taken action.
4. I am not sure if Mars is worth (visit).
5. We had a (discuss)with them about the differences between Britain and the USA.

1. living
2. worries
3. harming
4. visiting
5. discussion

1. about为介词，后接动词-ing形式，故填living。
2. 根据语境可知问的是“你在担心什么”，worry在此处表示“担心的事”，为可数名词，根据are可知用复数形式worries。
3. prevent...from doing sth.为固定搭配，意为“阻止……做某事”，harm用动名词形式harming。
4. be worth doing sth.为固定用法，意为“值得做某事”，visit用动名词形式visiting。
5. have a discussion为固定短语，意为“进行讨论”，discuss的名词形式为discussion。

三、从方框中选择适当的单词或短语，填入其正确形式。每个单词或短语仅用一次。
invent cover up to big so much
If you have ever looked through a telescope(望远镜), you might want to thank Galileo. He was born in 1564 in Italy. He was bright and hard - working and had a gift for art and music. His father hoped he would become a doctor. However, Galileo liked Maths 1. that he decided to study it. He did well in school and he tried to invent some things to make money.
One day, he heard that someone invented a spyglass(小型望远镜). He learned that the instrument could show faraway things as if they were nearby. It could magnify(放大)things to appear up to three times 2. ! Galileo decided to develop one of his own. He quickly understood how the spyglass worked and made improvements. He named his improved spyglass the telescope. It could magnify things 3. ten times.
He continued to make improvements on his 4. . One night, he pointed his telescope towards the night sky. He made his first space observation(观察). With his telescope, Galileo saw that the Moon is 5. with many bumps(隆起)and craters(坑). The telescope also showed many more stars. With it, Galileo was able to make many important discoveries about space.

so much; bigger; up to; invention; covered

1. 由“so...that...”结构可知，此处需填“so much”表示“如此喜欢数学以至于决定学习它”。
2. “three times + 形容词比较级”表示“三倍……”，“big”的比较级为“bigger”，填“bigger”。
3. 表示“多达十倍”用“up to”，填“up to”。
4. “his”后需名词，“invent”的名词形式为“invention”，填“invention”。
5. “be covered with”为固定短语，意为“被……覆盖”，填“covered”。