Ozone is an unstable faintly blui gas that is the most chemical active form of Oxygen.

Câu hỏi liên quan

• Choose A, B,C or D on your answer sheet to indicate the underlined part that  needs correction in each of the following questions:

  Ha Anh can now speak English more well than the last time I met him

• An octopus has three hearts pump blood throug their body.

• Choose the correct answer to complete the sentence. " Most young people become homeless _______ circumstances make it impossible for them to live at home"

ZUNIA12

• The development of professi sports in the United Stated dates back to nineteenth century.

• It’s been brought to my attention that there has been a number of thefts from office

• If dinosaurs would have continued roaming the earth, man would have evolved quite difference

• Every society changes, but not change the same rate or in the same direction

• Superior to all others woods for shipbuilding, teak also used for furniture, floorin, and general construction

• The government have tried to .................  the price of food, and they finally succeeded.

• When you passed the town clock, did you notice what time was it?

• Many exercises such as calisthes, running, or to swim involve producing muscle tension through range of movements that are called isotonics.

• Although the Red Cross accepts blood from most donors, the nurse will not let yougive blood if you have just had a cold.

• I had to get up early,  .............  I’d have missed the train.

• Mark the letter A, B, C or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions: 

  His new work has enjoyed a very good review from critics and readers. 

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

• Lassen National Park, the situation of a dormant volcano, is one of the most beautiful but least visited parks in the west United States.

• The most substanc expand in volume when they are heated.

• All employee will be given an electric for entrance and exit purpose

• Scientists are still uncertain of what universe originated millions of years ago

• Are there enough champ to go round? Will everybody get a glass?