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

Câu hỏi liên quan

• The bold in which Margaret Mead defined the terms “family” – based as much on choice as on biological relationship – is possiblye most enduring of her legacies.

• Have you seen the place_______ the graduation ceremony will be held? 

• They took the coffin with the captain’s body and carrying it  to the cemet to bury him

ZUNIA12

• The flag over the White House is risen at dawn (every day by color guard from the United States armed forces

• You have to study hard to keep pace in your classmates

• Last night, when I was reading, I heard the door to open and saw shadow move across the floor.

• The Earth is the only_______ having life in the solar system. 

• Instead of _______ about the good news, Hilary seemed to be indifferent. 

• Choose the best option:

  You may choose one from the five World Heritage Sites in Viet Nam ____ in this leaflet to visit on your next field trip.

• My father is happy because I get  ..........   results at school.

• Choose the letter A, B, C or D to complete the sentences. " You_____ yourself ill if you don't eat properly."

• Choose the word(s) OPPOSITE in meaning to the following word(s). "Subsequent"

• Choose the mistake in the following sentences: Lan classified her books in different categories. 

• The skin receives nearly the third of the blood pumped out by heart.

• Agronomists study crop disease, selective breeding, crop rotation, and climatic factors, as well content and erosion.

• After the team of geologists had drawn diagrams in their notebooks and wrote explanations of the forma which they had observed, they turned to their camp-side to compare notes

• Although there are new drugs the market, deaths from malaria are being increasing some parts of the world

• The word "permanent"  is closest in meaning to ____.

• An electromagnet will remain magnetized only as longer as electricity flows through it .

• Since the Great Depression of 1930’s, social programs such Social Security have been built into the economy to help avert severity business declines