Correct Answer: B

Rationale: In the tradition mentioned in the passage, white elephants were given as punishment gifts by rulers to those who displeased them. These white elephants were considered burdensome because they were sacred and could not be made to work like other elephants. The recipients had to bear the high maintenance costs and care for the white elephants in a lavish style, leading to financial burdens and sometimes impoverishment. This tradition originated the term 'white elephant' to denote unwanted gifts. Therefore, the correct answer is B. Choice A is incorrect because white elephants were not symbols of wealth and power in this context; they were burdensome gifts. Choice C is incorrect as there is no mention of white elephants being used in religious ceremonies in the passage. Choice D is incorrect as white elephants in the tradition were real elephants, not mythological creatures with no practical use.

Correct Answer: B

Rationale: In the tradition mentioned in the passage, white elephants were given as punishment gifts by rulers to those who displeased them. These white elephants were considered burdensome because they were sacred and could not be made to work like other elephants. The recipients had to bear the high maintenance costs and care for the white elephants in a lavish style, leading to financial burdens and sometimes impoverishment. This tradition originated the term 'white elephant' to denote unwanted gifts. Therefore, the correct answer is B. Choice A is incorrect because white elephants were not symbols of wealth and power in this context; they were burdensome gifts. Choice C is incorrect as there is no mention of white elephants being used in religious ceremonies in the passage. Choice D is incorrect as white elephants in the tradition were real elephants, not mythological creatures with no practical use.

Correct Answer: A

Rationale: The correct answer is A. The author wrote the passage to explain insomnia and suggest ways to deal with it. The passage provides information about insomnia, its impact on daily life, and offers solutions like sleep hygiene and non-pharmacological therapies. Choices B, C, and D are incorrect as the passage does not encourage avoiding sleep, criticize people with sleep problems, or promote the use of sleep medication. Instead, it focuses on understanding and addressing insomnia.

Correct Answer: B

Rationale: The correct answer is B: 'Jetlag is caused by moving between time zones.' The passage explains that jetlag occurs when moving suddenly from one time zone to another, such as when flying from Asia to North America. This disrupts the body's internal clock, leading to symptoms like tiredness and sleep disturbances. Choice A is incorrect as jetlag is not attributed to high-speed travel but to time zone changes. Choice C is incorrect as the passage clearly links jetlag to changes in time zones. Choice D is incorrect as jetlag is a real phenomenon experienced by individuals who travel across different time zones.

Correct Answer: B

Rationale: Benjamin Franklin is credited with proposing the idea of Daylight Savings Time, as stated in the extract. However, it was not implemented during his lifetime. Choice A is incorrect because he proposed, not invented, Daylight Savings Time. Choice C is incorrect as there is no mention of Franklin opposing it. Choice D is incorrect as the extract clearly states his connection to the proposal of Daylight Savings Time.