The most common form of treatment it is mass inoculation and chlorination of water sources

Câu hỏi liên quan

• Since the computer was invented, the work of accountants have been simplified.

• To see the statue of Liberty and taking picture from the top of the Empire State Building are two reasons for visiting New York City.

• All nations may have to make fundamental changes in their economic, political, and the technological institutions if they are to preserve environment.

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• Several people have apparent tried to change the man’s mind, but he refuses to listen

• Choose the best answer A, B, C or D for the sentence: "On this occasion, my class is making an ______ to visit some caves near our city."

• The discovery of the antibiotic penicillin in 1928 has not produced antibiotics useful for the treatment of infectious diseases until 1940

•  I find the origin of football is the most _________.

• The majestic Rocky Mountains stretch each the way from Mexico to the Arctic

• Though he did not develop sign language, Laurent Clerc brought it on America from France.

• Even the most discriminating gourmet will agree that food in the south is as good as any other regions in the country

• According to most psychological studies, body language expresses a speaker’s emotions and attitudes, and it also tends to affect the emotions and attitudes of the listen.

• Light can travel from the Sun to the Earth in eight minute and twenty seconds

• They will never forget _______ the Prince.

• Mark the letter A, B, C, or D to indicate the underlined part that needs correcting in each of the following questions.

  Janet and Betty plays tennis every afternoon with Jack and me.

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

• Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following question:

  I can’t understand the French visitors. I wish I ________French.

• Find the mistake: This discrimination (A) against women (B) and girls must be (C) abolishing (D).

• Consequently the kit fox is an endangered species, wildlife experts in the California desert are using carious methods to protect it.

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

  On most trains, there is a_________, where you can eat a snack or something hot.

• Choose the best option A, B, C or D to make meaningful sentence: "If only my mother_____ enough money, she could have bought that beautiful bicycle for me."