Chất $(C{H}_3{)}_{2}CH–C_6{H}_5$ có tên gọi là :

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  When someone is ___________, they are officially stopped from taking part in a particular event, activity, or competition, usually because they have done something wrong.

   

• Choose the best answer for the following sentence:

  _________ is the process of something becoming worse or weaker, or being made worse or weaker.

   

• Find a mistake in the four underlined parts of the sentence and correct it:

  Blue Whales are now threatened with extinct.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Doctors are looking after the people who were serious injured in the accident.

• Choose the best answer for the following sentence:

  The contestant hit the target with _____________ great accuracy.

   

• Choose the word that has the underlined part pronounced differently from the rest:  

  rumor               unselfish                 number                   up

• Choose a word that has different stress pattern:

  brighten             friendship                  arrive              rumor

• Choose a word that has different stress pattern:

  acquaintance              unselfish                 enthusiasm              confidence

• Choose a word that has different stress pattern:

  benefit                 principle                 incapable                 constancy

• Choose one sentence that has the same meaning as the root one:

  Jeff missed his first day of class due to the fact that he had overslept for several hours.