1. 由于重力低
2. 对……确定
3. 意识到……
4. 对……达成共识
5. 使……想起美味的食物

1. because of low gravity
2. be sure about
3. realize that...
4. reach a consensus on
5. remind...of delicious food

1. "由于"常用"because of"，"重力低"是"low gravity"，组合为because of low gravity。
2. "对……确定"固定短语为be sure about。
3. "意识到……"常用realize that...。
4. "对……达成共识"固定短语为reach a consensus on。
5. "使……想起"是remind...of...，"美味的食物"是delicious food，组合为remind...of delicious food。

一、根据音标、汉语、首字母提示或句意,填写单词
1. We all (围绕) around him dancing happily when he was singing.
2. She was looking at three (陌生人)—a girl with beautiful red hair and big blue eyes, and two very good-looking boys.
3. We must accept the (可能性) that we might be wrong.
4. There is a of four miles between my house and the sea.
5. He made such /'ræpɪd/ progress that his parents were very glad.

1. circled 2. strangers 3. possibility 4. distance 5. rapid

1. 句意“当他唱歌时，我们都围着他快乐地跳舞”。“围绕”对应动词“circle”，根据“was singing”可知时态为一般过去时，circle的过去式为circled。
2. 句意“她正看着三个陌生人——一个有着漂亮红头发和蓝色大眼睛的女孩，还有两个非常英俊的男孩”。“陌生人”对应名词“stranger”，由“three”可知用复数形式strangers。
3. 句意“我们必须接受我们可能错了的可能性”。“可能性”对应名词“possibility”，此处特指“我们可能错了”这一可能性，用单数形式。
4. 句意“我家到海边有四英里的距离”。根据首字母“d”及“four miles”可知填“distance”（距离），由“a”可知用单数形式。
5. 句意“他进步如此之快，他的父母非常高兴”。根据音标/'ræpɪd/可知填“rapid”（迅速的），修饰名词“progress”。

二、用所给单词的适当形式填空
1. Before reaching an (agree), they had a heated discussion.
2. — Is this computer (connect) to the Internet?
— Yes, it is.
3. With the (develop) of science and technology, life is becoming much easier.
4. The questions she asked last week are still under (discuss).
5. Some students said that (travel) in space would be fun.

1. agreement 2. connected 3. development 4. discussion 5. traveling/travelling

1. 空前有不定冠词an，需用名词形式，agree的名词是agreement，故填agreement。
2. 此处是被动语态，结构为be+过去分词，connect的过去分词是connected，故填connected。
3. 空前有定冠词the，需用名词形式，develop的名词是development，故填development。
4. under是介词，后接名词，discuss的名词是discussion，under discussion表示“在讨论中”，故填discussion。
5. 分析句子结构，that引导宾语从句，从句中缺少主语，需用动名词形式，travel的动名词是traveling/travelling，故填traveling/travelling。

三、同义句转换
1. Unless you work hard, you will not pass the exam.
You will not pass the exam .
2. Are you aware how far our school is away from Red Star Hospital?
between our school and Red Star Hospital?
3. Nanjing is a beautiful city which has a long history.
Nanjing is a beautiful city .
4. The box is so heavy that I can't carry it.
The box is .
5. My car broke down because it was cold, so I had to walk to my office.
My car broke down , so I had to walk to my office.

1. if you don't work hard
2. Do you know the distance
3. with a long history
4. too heavy for me to carry
5. because of the cold weather

四、根据中文提示完成下列句子
1. 他们确定太空旅行将非常快吗？
Are they sure about ?
2. 火星是一个环境和地球相似的星球。
Mars is a planet .
3. 在一个空气比地球上稀薄得多的星球上呼吸很难。
It is difficult .
4. 科学家们赞同生活在火星上是可能的吗？
Do scientists ?
5. 这些照片让我想起了去过火星的宇航员。
The photos .

1. Are they sure about space travel being very fast?
2. Mars is a planet whose environment is similar to that of the Earth.
3. It is difficult to breathe on a planet where the air is much thinner than that on Earth.
4. Do scientists agree that it is possible to live on Mars?
5. The photos remind me of the astronauts who have been to Mars.