四、词汇运用
A
KEY→P21
范畴:人与社会 主题:科学理论 体裁:说明文 难度:★★★★ 建议用时:6分钟 评价:/6
请认真阅读下面短文,从方框中选择适当的单词或短语,在横线上填入其正确形式。每个单词或短语仅用一次。
fast according to possible really moment scientist
Is time travel real? It is because we're all traveling in time right now. We're moving at a speed of one second per second. Also, 1. Einstein, time and space are connected. So, the 2. we travel, the slower we experience time.
That isn't the time travel in most people's minds. They want to jump into a time machine and travel to a 3. in the past or future. Right now, that's only possible in science fiction books and movies.
However, 4. do have ideas about time travel. Some used math to test their ideas, and the math worked. For them, time travel is 5. but only in theory. That's not stopping them. They're looking at other ways to make time travel a(n) 6. thing.
素材来源:《Live互动英语》

本文是一篇说明文。短文介绍了穿越时空的现实性与研究方法。
1. according to 2. faster 3. moment 4. scientists
5. possible 6. real

B
KEY→P21
范畴:人与自然 主题:自然生态 体裁:说明文 难度:★★★ 建议用时:8分钟 评价:/9
根据短文内容和所给中文提示写出单词的正确形式,每空限填一词。
Known for their curly tails and the horse-like heads that give them the name, seahorses are unique sea fish. Let's take a deep dive into the world of these special 1. (动物)!
The seahorse is a small fish that is found in many waters around the world. Its size is from as small as a peanut to as large as a tennis shoe. Seahorses come in many colors, and some even have the ability to change the color to match the 2. (环境) where they make their homes.
Seahorses can swim in all directions and move vertically in the water by 3. (挤压) air into or letting air out of a balloon-like organ inside their bodies. Even with this organ, seahorses are the 4. (最慢的) swimmers among fish. Their only way to push themselves forward is by using a tiny fin on their back. Often, seahorses hold onto floating plants with their tails for a 5. (更快的) trip!
Humans are the greatest danger to seahorses. Seahorses feed on tiny fish, but chemical pollution from human activities poisons and reduces these food sources. And climate change caused by humans has 6. (导致) to higher ocean temperatures, which put 7. (压力) on seahorses' bodies by affecting their breathing and appetite. What's more, because seahorses are poor swimmers, they have trouble staying 8. (离开) from an area when a source of pollution is introduced into their habitat.
However, these threats pale in comparison with the seahorse trade. Over 20 million of the fish are caught and killed each year for use in traditional Chinese medicine. As it stands, seahorses could disappear by around 2050, but there is 9. (仍然) time to save them. In one word, the effects of climate change must be reduced if these unusual little animals are to survive.

海马以其卷曲的尾巴和赋予它们名字的马头而闻名，它们在海洋动物中是独一无二的。本文介绍了海马的独特生活习性以及海马面临的生存危机，并告知人们如果想要保护海马，必须减少气候变化的影响。
1. animals 被 these 修饰，且根据中文提示可知，应填入复数名词 animals。
2. environments 由语境与中文提示可知，对应填入复数名词 environments。
3. pushing 由中文提示和介词 by 可知，填入 pushing。
4. slowest 由空前的 the 及中文提示可知，填入形容词最高级 slowest。
5. faster 由中文提示可知，填入形容词比较级 faster。
6. led 由中文提示可知，在 has 后填入过去分词 led 构成现在完成时。lead to 导致。
7. stress 由中文提示可知，对应填入不可数名词 stress。
8. away 由中文提示可知，填入 away。stay away from 远离。
9. still 由中文提示可知，对应填入副词 still。