In the sixteenth century, Francois Vieta, a French mathematician, used the vowels “a”, “e”, “i”to represent a unknown number.

Câu hỏi liên quan

• Many spacemen could never get back to the Earth because of ____ accidents. 

• Needles are simple – looking tools, but they are very relatively difficult to make.

• What are common known as “lead” pencil are not lead, but rather mixture of graph, clay and wax

ZUNIA12

• Lunar eclipses happen only if the Moon is full, but they do not occur at an every ull Moon.

• My father doesn’t  know speak Chinese

• Jessica hasn't made up her mind about where to go to school. She  ............  attend Duke University. She just doesn't know yet.

• "I'm sorry I'm late. I missed the bus." – "________. We haven't started yet." 

• Some studies show that young babies prefer the smell of milk to those other liquids.

• Researchers in economics , psycholo, and marketing can help businesses.

• In the 1920s, Tulsa had a higher number of millionaire than other U.S. city

• Australian koalas are furry, gray animal that live in trees and feed leaves.

• Louis Braille designed a form of communication enabling people to convey and preserve their thoughts to incorporate a series of dots which were read the finger tips.

• Jack had to skip breakfast ; otherwise , he will be late for class.

• The new mall shopping in the downtown area wil much more expensive for the shoppers than the mall in the freeway outside town.

• Complete the following passage.

  "British families started going on holiday to the seaside around the middle of the 19th century. The invention of the railways made this possible. The first holidaymakers were quite rich and went for their health and education. The seaside was a place to be (1)______of illnesses, and doctors recommended bathing in the sea and drinking sea water. Also to increase their knowledge, families attended concerts and read books from libraries.

  At that time, ordinary working people had very little time (2)______. However, in 1871, the government introduce four “Bank Holidays” – national holiday days. This allowed people to have a day or two out, which now and then gave them a taste for leisure and the seaside. At first they went on day-trips, taking

  (3)______ of special cheap tickets on the railways. By the 1880s, rising incomes meant many ordinary workers and their families could have a week’s holiday at the seaside. Rail fares were reduced and cheap hotels were built to (4)______ them. Holidaymakers enjoyed being idle, sitting on the beach, bathing in the sea, and eating ice-cream. Cheap entertainment was (5)_____ offer and holidaymakers went to have fun. Today, the English seaside remained popular, with more than 18 million holidays taken there each year."

  3. (3)______ of special cheap tickets on the railways.

• Although he was happily married, he preferred spending lately hours at work to spendin evenings lately t home.

• As plane went more faster down the runway, David began sweat nervously

• If we come home on time our step-mother will be angry.

• Both Mr. and Mrs. Smith are explaining the children the rules of the game

• Before she moved here, Arlane had been the president of the organization fo since four years.