D Choose and write（用所给单词的适当形式填空）
last brush vegetable hour side
1. Lisa has strong teeth because she them two times a day.
2. Mike wrote his name on both of the card.
3. The sunny weather for three days last week.
4. I will eat more green . They are good for my health.
5. I spent two reading the storybook yesterday.

1. brushes 2. sides 3. lasted 4. vegetables 5. hours

【分析】
本题要求用所给单词的适当形式填空，需结合句子时态、主语特征、固定搭配等规则分析每个空：1. 需根据一般现在时主语的单复数确定动词形式；2. 需掌握both后接可数名词复数的规则；3. 需根据过去时间状语确定动词过去式；4. 需结合固定搭配及名词复数要求；5. 需根据数词后接可数名词复数的规则判断。
【解析】
1. 句意为“Lisa有坚固的牙齿因为她一天刷两次牙”，主语she是第三人称单数，时间状语two times a day表一般现在时，动词brush需用第三人称单数形式brushes。
2. 句意为“Mike把他的名字写在卡片的两边”，both表示“两者都”，后接可数名词复数，side的复数形式为sides。
3. 句意为“上周晴天持续了三天”，时间状语last week表过去，动词last需用过去式lasted。
4. 句意为“我会吃更多绿色蔬菜，它们对健康有益”，green vegetables是固定搭配，意为“绿色蔬菜”，此处用复数形式vegetables。
5. 句意为“昨天我花了两小时读这本故事书”，数词two后接可数名词复数，hour的复数形式为hours。
【答案】
1. brushes 2. sides 3. lasted 4. vegetables 5. hours
【知识点】
一般现在时动词第三人称单数、名词复数变化、一般过去时动词过去式
【点评】
本题为基础词形填空题，主要考察动词时态变化、名词单复数及固定搭配，属于英语基础知识点的常规应用，难度较低。
【难度系数】
0.8

E Read and choose（读对话，选出正确答案）选做题
Mum: Please turn off the lights before you go out to play, Tom.
Tom: OK, Mum, I will. Why do we save electricity?
Mum: Because making electricity uses a lot of energy. When we save electricity, we save energy.
Tom: I see. I'll do something else to save electricity.
Mum: Wow! What will you do?
Tom: I'll turn off the computer and the TV when I don't use them. And I'll try to use natural light in the daytime.
Mum: Wonderful! These small things can help the Earth in a big way.
() 1. What does Mum ask Tom to do before he goes out to play?
A. Turn off the TV.
B. Turn off the lights.
C. Turn off the computer.
() 2. Why should Tom save electricity according to (根据) Mum?
A. To save energy.
B. To save money.
C. To be healthy.
() 3. What else will Tom do to save electricity in the daytime?
A. He will play outside.
B. He will try to use natural light.
C. He will turn on the computer and the TV.
() 4. How does Mum feel at the end?
A. Worried.
B. Calm.
C. Happy.

1. B 2. A 3. B 4. C

【分析】本题为英语阅读理解选择题，需根据对话原文定位关键信息解题：第1题需找妈妈要求汤姆外出前做的事；第2题需找妈妈说明的省电原因；第3题需找汤姆白天省电的其他做法；第4题需根据妈妈的表述判断情绪。
【解析】1. 定位对话第一句“Mum: Please turn off the lights before you go out to play, Tom.”，可知妈妈让汤姆外出前关灯，对应选项B；2. 定位妈妈回答“Why do we save electricity? Because... When we save electricity, we save energy.”，可知省电是为了节约能源，对应选项A；3. 定位汤姆的话“And I'll try to use natural light in the daytime.”，可知白天会用自然光省电，对应选项B；4. 定位妈妈最后说“Wonderful!”，可知妈妈是开心的，对应选项C。
【答案】1. B 2. A 3. B 4. C
【知识点】阅读理解 细节理解
【点评】本题考查学生从对话中提取关键信息的能力，题目难度较低，只要仔细阅读对话即可轻松选出正确答案。
【难度系数】0.8