Chất nào sau đây không tác dụng với dung dịch NaOH?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  We didn’t find it easy to find her house.
   

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

  brown                   plough                     throw                  blouse

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

  practice                  blaze                 brand                 plaster

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

  blue                   prune                     bruise                   plum

• Choose a word that has different stress pattern:

  equivalent                    require                     decrease                  motivate

• Choose the best answer for the following sentence:

  The number of people receiving reading and writing lesson ____________ over 4,500 by 2001.
   

• Choose the best answer for the following sentence:

  I think it is a/an _______________ way to help them to read and write.
   

• Choose the best answer for the following sentence:

  The fight _____________ illiteracy continued in the following summer.
   

• Choose the best answer for the following sentence:

  In my opinion, more work has to be done to _____________ illiteracy in our country.
   

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

  “Don’t forget to feed the chicken twice a day, ” he said.