Salt in its solid state is not able to conduct electricity because ______.
Đáp án D
Muối ở thể rắn không thể dẫn điện bởi vì
A.các ion mang điện của nó có thể chảy dễ dàng
B. nó không thể tạo ra ion mang điện
C. nó có các electron tự do
D. các ion mang điện của nó không tự do di chuyển
Dẫn chứng: In its solid state an ionic substance like salt cannot conduct electricity as its charged ions cannot flow.
Which of the following is NOT considered an essential characteristic of architecture according to the passage?
The author mentions “fish” in the first paragraph because __________________.
When compared with implements "flaked with a counter-clockwise rotation”, it can be inferred that "implements flaked with a clock-wise motion" are ______________.
According to the passage, which of the following was an obstacle to the development of the icebox?
The word "substitutes" in paragraph 1 is closest in meaning to ________________.
According to the passage, Moore's icebox allowed him to _______________.
Which of the following could best serve as the title of the passage?
The word "congested" in paragraph 1 is closest in meaning to ________________.
For example, cheap oral-rehydration therapy developed in Bangladesh has dramatically cut the death (282)______ from childhood diarrhoea.