Many rare____of animals are in danger of extinction.
A. species
B. classes
C. being
D. pairs
species (n): loài (luôn ở dạng số nhiều)
classes (n): tầng, lớp
being (n): sự tồn tại, sinh vật
pairs (n): cặp
=> Many rare species of animals are in danger of extinction
Tạm dịch: Nhiều loài động vật quý hiếm đang có nguy cơ bị tuyệt chủng.
Đáp án cần chọn là: A
Venus approaches the Earth more closely than any other planet is.
Many organizations have been set up and funds have been raised.
Dinosaurs became ____ millions of years ago.
We should develop such ____ sources of energy as solar energy and nuclear energy.
Trees not only bring nature to urban areas, but they also help clean the air by absorbing pollutants, ______ oxygen, ______ water, and grow food.
Nancy isn’t used to walking so far.
Many national parks have been established to protect ____animals.
Fewer people came to the meeting than we had expected.
I’m always nervous when I travel by air.
Increased consumption will lead to faster ____ of our natural resources.
I do apologize for my forgetting your birthday.
Robert Frost was not well known as a poet until he reached the forties.
The amounts of oxygen and nitrogen in the air almost always remain stable, but the amount of water vapor vary considerably.
The American frontiersman, politician, and soldier Davy Crockett is one of the most popular of American hero.
Solar energy, air and water are _____ resources because there is unlimited supply.