Choose the correct answer to complete the sentence. "Deforestation is one of the biggest environmental______ the ecological balance in the world"

Câu hỏi liên quan

• To help policy makers and another, the government spends as much as $1.4 million a year in collecting statistics.

• The threat of being dismissed do not worry me any more because I have started my own business.

• You have to use a magnifying glass so that to see some of the minute details.

ZUNIA12

• Choose the correct answer to complete the sentence. "We must _____ that people are heavily polluting the environment."

• Mr Ross, our old history teacher ruled his classes by a rod of iron!

• The need for a well-rounded education was an idea espoused by the Greeks in time of Socrates.

• Some children, before going to school, go to kindergartens, officially are called nursery schools.

• I lost your phone number. Otherwise, I ____ you much earlier. 

• While the sun is the major source of ultraviolet rays, it is not the source only

• Jeff wouldn’t have bumped into the waitress if he ____ in such a hurry. 

• George Washington, his portrait appears on the quarter coin and the dollar bill, served two terms as president.

• Never before has so many people in the United States been interested in soccer.

• If everyone _________, how would we control air traffic? Surely, we'd all be crashing into each other. 

• Sleeping all day, to eat too much and never going out is unhealthy.

• Karen hasn’t decided still if she wants to run for the Presidency again this year.

•  Scientists sent ............ expedition to ............ Mars during .......... 1990s. 

• Mel's grandmother is in........... hospital, so we went to visit her ............ last night. 

• If his grades had been better, he would accept as a graduate student on the MBA program.

• Choose the correct answer to complete the sentence. "Scientists predict that by 2030, the rainforest will have ______ smaller by 40%. "

• Choose the correct answer to complete the sentence. "In order to prevent darkening, pears, peaches and apricots are ________ to the fumes of burning sulphur before drying"