The Earth's natural resources are limited. Water, forests, and clean air are not endless. Whether we can protect these resources for future generations(后代) depends on what we do today.
In some parts of the world, people face water shortages. The rainfall is low, and the underground water is disappearing. In other places, deserts are growing because trees have been cut down. These problems may seem too big for one
person to solve. But amazingly, small changes can make a big difference.
Take energy use as an example. When we charge our phones, we use electricity. If we unplug(拔掉) the charger when it's not in use, we will save more energy. According to scientists, if every family in China did this, the energy saved could power a small city.
Another example is water. Some people let the water run while brushing their teeth. That wastes probably 10 liters of water every time. If we turn off the tap, we will save lots of water.
“Environment protection is not crazy,” says a young environmentalist. “It’s about making small choices every day. That we can all do something is the most important belief.”
()1. What is the main idea of the passage?
A. Natural resources are endless.
B. Small actions can help protect the environment.
C. Only governments can solve environmental problems.
D. Water shortage is the biggest problem.
()2. What does the example of phone chargers show?
A. Unplugging chargers saves energy.
B. Charging phones wastes energy.
C. Phones use too much electricity.
D. We should not use phones.
()3. What can we infer from the passage about saving water?
A. Only people in dry areas need to save water.
B. Water shortages will disappear in the future.
C. Saving water requires expensive technology.
D. Turning off the tap while brushing teeth is a good habit.
()4. What does the young environmentalist believe?
A. Protecting the environment is crazy.
B. Only big changes matter.
C. Everyone can do something.
D. The problem is too big to solve.

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

1. 主旨大意题：文章开篇点明地球自然资源有限，随后点明核心观点“微小的改变就能带来巨大影响”，还列举了随手拔掉闲置充电器、刷牙时关掉水龙头两个日常小事的例子，最后引用环保人士的话强调日常小选择对环保的意义，对应选项B。A选项和原文“自然资源有限、并非无穷无尽”表述相悖，C选项文中未提及只有政府能解决环境问题，D选项文中没有说明水资源短缺是最大的环境问题，均排除。
2. 细节理解题：关于手机充电器的例子，原文明确说明“如果不在使用的时候拔掉充电器，我们就能节约更多能源”，对应选项A。B选项表述错误，正常给手机充电不会浪费电，闲置不拔充电器才会浪费能源；C选项文中没有提到手机耗电量过高；D选项“我们不应该使用手机”完全不符合文意，均排除。
3. 推理判断题：文中提到刷牙时一直流水会浪费大量水，如果关掉水龙头就能节约很多水，由此可推断刷牙时关掉水龙头是值得提倡的好习惯，对应选项D。A选项表述错误，节水是所有人都需要做的事，并非只有干旱地区的人需要；B选项文中没有提到水资源短缺未来会消失；C选项文中介绍的节水方法都是日常小事，完全不需要昂贵的技术，均排除。
4. 细节理解题：年轻环保人士的原话提到“我们所有人都可以做点什么是最重要的信念”，对应选项C“每个人都可以为环保出一份力”。A选项和他所说的“环保一点都不疯狂”相悖，B选项他强调的是日常小选择的意义，并非只有大改变重要，D选项文中明确说明小行动可以带来大不同，没有说问题太大无法解决，均排除。