Oil, coal and natural gas are ____ fuels made from decayed material.
A. unleaded
B. smokeless
C. solid
D. fossil
Giải bởi Vietjack
unleaded (adj): không chứa chì
smokeless (adj): không khói thuốc
solid (adj): rắn
fossil (adj): hóa thạch
=> Oil, coal and natural gas are fossil fuels made from decayed material.
Tạm dịch: Dầu mỏ, than đá và khí đốt thiên nhiên là những nguồn năng lượng hóa thạch được sinh từ sự mục rữa của động thực vật
Đáp án cần chon là: D
Robert Frost was not well known as a poet until he reached the forties.
Dinosaurs became ____ millions of years ago.
We should develop such ____ sources of energy as solar energy and nuclear energy.
Many organizations have been set up and funds have been raised.
Venus approaches the Earth more closely than any other planet is.
Laura said that when she ____ to school she had seen an accident.
Trees not only bring nature to urban areas, but they also help clean the air by absorbing pollutants, ______ oxygen, ______ water, and grow food.
Many rare____of animals are in danger of extinction.
Many national parks have been established to protect ____animals.
I’m always nervous when I travel by air.
All fossil fuels are ____ resources that cannot be replaced after use
Fewer people came to the meeting than we had expected.
Increased consumption will lead to faster ____ of our natural resources.
The earth is the only planet with a large number of oxygen in its atmosphere.
Nancy isn’t used to walking so far.
