Dung dịch nào sau đây phản ứng với dung dịch HCl dư tạo ra chất khí?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  hide                     ivory                     decline                    continent

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

  weapon                    increase                      threat                    spread

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

  elephants                    decades                    poachers                    actions

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

  endangered                     threatened                      recovered                    advanced

• Choose the best answer for the following sentence:

  People have hunted animals ___________ food, hides, and ivory.
   

• Choose the best answer for the following sentence:

  The number of the world’s elephants is restricted ____________ some certain countries.
   

• Choose the best answer for the following sentence:

  A _____________ punishment is necessary to prevent poaching and cutting trees illegally.
   

• Choose the best answer for the following sentence:

  ____________ passenger pigeon, one of several species of extinct birds, was hunted
  to extinction over _____________ few decades.
   

• Choose the best answer for the following sentence:

  Since the 1600s, humans have rapidly increased _____________ rate of extinction because of population growth and resource consumption.
   

• Choose the best answer for the following sentence:

  Today, most of ___________ world’s habitats are changing faster than most spe-cies can evolve, or adapt to such changes.