Choose the best answer:
Around 150 B. C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

Câu hỏi liên quan

• There is ................. to be a serious energy crisis in the next century.

• Choose the correct answer in each sentence.

  -------- the television coverage of the general election, a number of high-profile candidates were interviewed live on air.

• Fill in the blank with a suitable connector

  To get from Vancouver to Victoria, you can fly; ________, you can also ride the ferry.

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• It’s about time Mrs. Richard apologized to me ............. me a gossip in front of everybody.

• Fill in the blank with a suitable connector

  The rice is only 6000 dong per kilo, ______ we bought 10 kilos.

• As the party conference, the Prime Minister ____ backing for his new policies.

   

• .................. he had enough money, he refused to buy a new car.

• Choose the correct answer in each sentence.

  Employees  ___________  on business purposes must ensure they submit their expense report before the required date.

• “A bat can hear from a long distance”. “________”

• Choose the best answer among A, B, C or D that best completes each sentence: If I have to do some homeworks tonight, I will not be able to ____ the concert.

• Choose the best answer:
  His career in the illicit drug trade ended with the police raid this morning.

• Choose the correct answer in each sentence.

  Mr. Hiroshi was not required to attend the computer training  ________  he had extensive previous experience in software programming.

• Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

  (A)On the way back home from the library, we saw(B) two of our classmates(C) to cycle (D)side by side.

• Choose the correct answer in each sentence.

  We will continue to strengthen our natural gas business by ________   pursuing new opportunities to expand our current asset base.

• Choose the correct answer in each sentence.

  Our new product line is available in a range of color and size _____________.

• Choose the correct answer in each sentence.

  Never leave work early  ____________  you have permission from your manager to do so.

• Choose the correct answer in each sentence.

   Some changes to student loan programs were announced to help  ___________  some of the growing student debt.

• Choose the underlined word or phrase that needs correcting: It was nice to see all his family, all of who I have met before

• Choose the correct answer in each sentence.

  The Tiffany Corporation celebrated the ------ of the brand's first store in Auckland, New Zealand, last week.

• Everyone laughed when he ....................  the teacher so well.