The ozone layer must be protected because it shields the Earth from excessive ultraviolet radiations.

Câu hỏi liên quan

• There are no pouched animals in the United States but only the Opossum.

• The Homestead Act of 1862 granted 160 acres of land for any settler who would spend five years on the land.

• I have only had time to___________ the report before going to the meeting.

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• The total cost of all of Ms. Harrell’s driving lessons __________ £6,000. 

• Mining over 2,000 years ago, copper is one of the earliest known metals.

• Identify the error in each sentence: For (A) such a demanding job, you (B) will need (C) qualifications, soft skills and (D) having full commitment.

• The tongue is the principle organ of taste, and is crucial for chewing, swallowed and speaking.

• Jeanne said that she would __________ our place this afternoon if she had enough time before she had to go back to work. 

• After the last argument I______with my brother, we didn't speak to each other for months.

• Ancient people used pot for cooking, storing food, and carrying things from place to place.

• Of all outdoor activities, Paul likes fishing best of all, but he doesn’t enjoy cleaning the fishing rods afterwards.

• The boy ________ off his jacket and ________ it away.

• Long prized for its medicine value, ginseng these days has become more common of energy-boosting drinks particularly for low- performance athletes.

• His ............... of safety regulations really can’t be ignored any longer.

• This book is not really ________. It is a waste of money buying it.

   

• Although the exam was difficult, ______ the students passed it.

• The number of teaching assistants required meeting undergraduate course needs is rapidly increasing.

• The abbreviation IAEA __________ the International Atomic Energy Agency, which seeks to prevent the build-up of nuclear weapons. 

• As soon as my exams are finished, I’m ______ to the seaside to have a holiday.

   

• The Germany mint makes frequently coins from cheap alloys that are worth far less the value stamped on them.