Each year about fifty hundred_________ of plants and animals are already being eliminated.
A. damages
B. floods
C. species
D. defence
Đáp án: C
Giải thích: species of plants and animals: loài động thực vật
Dịch: Mỗi năm hàng tram loài động thực vật đã bị xoá bỏ
To save electricity, we are cutting down __________ our central heating.
Without plants, most water ____________ off as soon as it falls, taking away valuable soil.
Both fossil fuel _______ non-renewable resources are very important to our life.
__________ we conserve natural resources, they will run out very soon.
Man and most animals need a _____________ supply of water to live.
There are about 3,000 plants __________ values as medicines against cancer, AIDS, heart disease and many other sicknesses.
Deforestation _________ destroying Earth’s plant and animal variety.