Câu hỏi :

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct  answer to each of the following questions                               

A. no positive or negative electric charge 

B. only a small amount of fully charged particles 

C. only a positive electric charge 

D. only a negative electric charge

* Đáp án

* Hướng dẫn giải

Đáp án : B

Câu 2 đoạn cuối: Water itself is a poor conductor or electricity as it does not contain a significant amount of fully charged particles (không chứa đủ lượng hạt mang điện cần thiết)

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