Correct Answer: B

Rationale: The rainforest plays a crucial role in regulating the global climate by absorbing carbon dioxide. The extract highlights the fact that trees take in carbon dioxide and give off oxygen. When trees are cut down, the amount of carbon dioxide increases, contributing to global warming. This emphasizes the significant impact of rainforests on the climate. Choice A is incorrect as the extract clearly states the importance of rainforests in absorbing carbon dioxide. Choice C, while true, is not directly related to the implied role of rainforests in regulating the climate. Choice D is also incorrect as the destruction of rainforests does have global consequences, such as contributing to global warming.

Correct Answer: A

Rationale: The correct statement about global warming in the passage on the Amazon Rainforest is that it is caused by deforestation. The passage explains that cutting down trees in the rainforest increases the amount of carbon dioxide in the air, leading to global warming. This is supported by the fact that the burning of Brazilian rainforests alone produces 200 million metric tons of carbon dioxide a year. Choice B is incorrect as the passage clearly establishes a direct link between deforestation and global warming. Choice C is incorrect as the passage does not suggest that global warming is exaggerated, but rather highlights the harmful effects of deforestation. Choice D is incorrect as the passage emphasizes the serious concern of global warming due to deforestation.

Correct Answer: B

Rationale: The correct answer is B: 'The tilt of the Earth creates seasons.' The passage explains that the tilt of the Earth causes the different seasons by changing the amount of sunlight different regions receive. This tilt results in varying angles at which sunlight reaches different parts of the Earth, leading to the seasonal changes in temperature and daylight hours. Choice A is incorrect because the passage clearly states that the tilt of the Earth does have an effect on the seasons. Choice C is incorrect because the tilt of the Earth remains relatively constant throughout the year. Choice D is incorrect as the tilt of the Earth is not random but follows a consistent pattern.

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: D

Rationale: The correct answer is D. The author highlights cultural diversity and the variety of eating habits in the article. The passage discusses the different eating methods developed by various cultures, such as cutlery in European cultures and chopsticks in China. It emphasizes the interest in discovering these cultural differences and learning new ways of doing things, showcasing the importance of diversity. Choices A, B, and C are incorrect as they do not align with the main focus of the article, which is cultural diversity and eating habits, rather than the author's opinion on chopsticks, space flight, or personal food preferences.