《2025年中学生世界八年级英语上册沪教版五四制》

Ⅳ. Read the following passage and choose the best answers.
Water follows a long process from nature to our homes. First, rain falls into rivers, lakes, and underground holes. Next, water is poured into a treatment plant. The chemical step removes dirt and dangerous germs(细菌). Then, clean-up machines remove mud and small stones.
At the plant, water goes through screens, sand filters, and a big tank. The filters trap mud and particles(颗粒). Workers step around to check closely. After this, water is pumped into pipes. Inside our homes, water comes out of taps when we open them.
After we use water, it becomes wastewater. This water runs into drains and flows back to the treatment plant. There, it is cleaned again. This cycle includes many steps—collection, cleaning, and distribution(分配).
Sometimes, water goes through indirect steps, like recycling for factories or watering parks. Engineers do research to make each step energy - saving. The world's water flow involves plants, cities, and farms.
We must carefully protect each step. If pipes shut or break, water can be wasted or drop in pressure. Farmers must also follow rules to avoid polluting the water. When we understand this process, we raise awareness that even a small kilo of clean water costs effort. And everyone can agree that protecting this cycle helps our planet.
( )1. What is the first step in the water process described in the passage?
A. Water goes into pipes.
B. Water flows through sand filters.
C. Rain falls into rivers and lakes.
D. Engineers study water use.
( )2. What does the chemical step at the treatment plant mainly do?
A. Adds colour to water.
B. Removes dirt and harmful germs.
C. Builds new water tanks.
D. Warms the water.
( )3. After we use water at home, where does it go next?
A. Into bottles.
B. Into rivers without cleaning.
C. Back to the treatment plant.
D. To farms for reuse.
( )4. The word "filters" in paragraph 2 most likely means:
A. Tools that heat the water.
B. Machines that check pressure.
C. Screens that block mud and particles.
D. Pipes that move water to homes.
( )5. What is the main purpose of the passage?
A. To tell people not to drink tap water.
B. To explain how clean water reaches our homes and why we should protect it.
C. To show that rain is dangerous without treatment.
D. To compare different countries' water systems.

答案： 1. C 2. B 3. C 4. C 5. B