一、按要求完成句子，每空一词(含缩略形式)。
1. The Changjiang River is about 6,300 kilometres long. (对画线部分提问)
is the Changjiang River?
2. We need to save fresh water because it is very valuable. (对画线部分提问)
need to save fresh water?
3. Water comes from rivers,lakes and oceans. (对画线部分提问)
water come from?
4. I usually take short showers to save water. (对画线部分提问)
to save water?
5. In fact,the rainforest is home to many animals. (改为同义句)
,the rainforest is home to many animals.

1. How long
2. Why do you
3. Where does
4. What do you usually do
5. As a matter of fact

1. 本题考查对长度的提问，画线部分是具体长度，需用特殊疑问词组How long来提问。
2. 本题考查对原因的提问，画线部分是原因状语从句，需用Why引导特殊疑问句，原句主语为We，提问时转换为you，主语为第二人称，助动词用do。
3. 本题考查对地点的提问，画线部分是水源来源地，需用Where引导特殊疑问句，主语water是第三人称单数，助动词用does。
4. 本题考查对动作的提问，画线部分是具体动作，需用What引导特殊疑问句，原句主语I转换为you，主语为第二人称，助动词用do，完整结构为What do you usually do。
5. 本题考查同义短语替换，In fact的同义短语是As a matter of fact。

二、读后续写。根据前句提示续写后句。
1. Dogs can be our good friends.
2. Water is very useful.
3. We can start with little things to save water.
4. Forests are important to us.
5. The earth is our home.
语法聚焦

1. They can help us look after our houses when we are out.
2. We need it to drink, wash clothes and grow crops.
3. For example, we can turn off the tap when we brush our teeth.
4. They can give us fresh air and protect the earth.
5. We should take good care of it and keep it clean.

本题要求根据前句提示续写后句，需围绕前句核心内容，运用七年级下册所学的简单句型与基础词汇，贴合主题进行合理表述：
1. 前句点明狗是我们的好朋友，续写可说明狗的具体作用；
2. 前句强调水很有用，续写可列举水的常见用途；
3. 前句提出从小事节水，续写可举具体的节水实例；
4. 前句表明森林对我们很重要，续写可说明森林的作用；
5. 前句指出地球是我们的家园，续写可说明我们保护地球的具体做法。

一、用括号内所给词的适当形式填空。
1. This old tree is over a (hundred)years old,and people like to sit under it chatting.
2. About 100 (million) people used ChatGPT in the first two months.
3. Our hometown is becoming more and more beautiful,and (thousand) of tourists come to
enjoy the nice parks and delicious local food every day.
4. —What's the population of China?
—More than 1.4 (billion). It has the second largest population in the world.
5. —How do we read the number "5,000"?
—Five (thousand).

1. hundred
2. million
3. thousands
4. billion
5. thousand

本题考查数词hundred, million, thousand, billion的用法：当这些数词前有具体数字（如a, 100, 1.4, Five等）时，用单数形式；当表示不确定的大量数量，后接of时，需用复数形式。
1. 空前有具体数字a，故填hundred的单数形式hundred。
2. 空前有具体数字100，故填million的单数形式million。
3. 空后有of，表不确定的大量游客，故填thousand的复数形式thousands。
4. 空前有具体数字1.4，故填billion的单数形式billion。
5. 空前有具体数字Five，故填thousand的单数形式thousand。