According to a report from the United Nation, more than half of the world’s major rivers have serious water loss and are polluted.
The Yellow River, the world’s fifth longest river, watered some of the oldest farms on the Earth.
First, rivers are dry because of damming (筑坝). Dams provide fields with water and make power. Now about 45,000 of them lie across the world’s rivers. They hold back around 15% of the world’s fresh water from running to the sea.
| A．How does it happen? |
| B．But now it has a serious problem. |
| C．Global warming is making things worse, too. |
According to a report from the United Nation, more than half of the world’s major rivers have serious water loss and are polluted.
The Yellow River, the world’s fifth longest river, watered some of the oldest farms on the Earth.
First, rivers are dry because of damming (筑坝). Dams provide fields with water and make power. Now about 45,000 of them lie across the world’s rivers. They hold back around 15% of the world’s fresh water from running to the sea.
| A．How does it happen? |
| B．But now it has a serious problem. |
| C．Global warming is making things worse, too. |
DID YOU KNOW people make around 300 million tons of plastic every year? That weighs as much as all the adults on Earth! Each year, 8 million tons of thrown-away plastic reaches the sea. |
| A．to use fewer plastic products | B．to protect the sea on the earth |
| C．not to drop plastic bags everywhere | D．not to make plastic products any more |
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