Choose the correct answer to complete the sentence. "Land erosion is mainly caused by widespread _______"

The biologist found some pollutants, a little of which can be considered very harmful to fish and other living organisms in the river.

Established about 1300, the Acoma Pucblo in New Mexico is believed to be oldest continuously occupied settlement in the United States.

The village that I was born and grew up is situated on the Red River.

Choose the correct answer to complete the sentence. "Having seen people suffer global warming consequences, people decided________ carbon footprints."

“You speak English well.” “Yes, but I wish I ____ another foreign language well too.” 

Stars derive their energy from thermonuclear reactions that take place in their heat interiors

Foreign students who are doing a decision about which school to attend may not know exactly where the choice are located.

Because the diamond is the hardest naturally occurring substance, it is used in industry for to cut, grinding, and boring other hard materials.

Choose the correct answer to complete the sentence. "Nowadays the common method for drying vegetables and minced meat is putting them in chambers and blowing hot air through."

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

There are no easy ways to learn a foreign language, _________?

The graphics ability of a computer depend on the speed of its processor and the size of its RAM

.................. Mekong River is .............longest river in.................... Vietnam. 

My city stops the flow of water, creating a reservoir and raise the flow of water.

Some methods to prevent soil erosion are plowing parallel with the slopes of hills, to plant trees on unproductive land, and rotating crops

Indiscriminately dumping of waste material and inadequate sewage treatment are two serious causes of environmental pollution.

Most of the magnesium used in the United States comes from the sea water.

Canada is made up of ten provinces and two territories, with governmental powers being divided between the federal government or the provinces.

Interest in automatic data Processing has grown rapid since the first large calculators were introduced in 1950.

If you make a five-days trip across the Atlantic Ocean, your ship enters a different time zone everyday.

Please open ..................door.