Đề kiểm tra học kì I môn Tiếng Anh Lớp 12 - Mã đề: 804 - Năm học 2018-2019 - Sở GD&ĐT Hậu Giang (Kèm đáp án)

Question 15: What is the main idea of the passage?

A. Scientists still have much to discover about electricity.

B. People would be at a loss without electricity.

C. Electric eels are potentially dangerous.

D. Biology and electricity appear to be closely related.

Question 16: The author mentions all of the following as results of a power failure EXCEPT ________.

A. traffic lights do not work                                    B. refrigerated food items may go bad

C. elevators and escalators do not function            D. people must rely on candlelight

Question 17: The word "it" in paragraph 3 refers to ________.

A. a doctor                      B. the heart                      C. living cells                  D. electricity

Question 18: How many volts of electricity can an electric eel emit?

A. 120                              B. 1,000                           C. 800                              D. 200

Question 19: Why does the author mention electric eels?

A. To compare their voltage to that used in houses

B. To give an example of a living electrical generator

C. To describe a new source of electrical power

D. To warn the reader to stay away from them