Correct Answer: B

Rationale: Choice B is the correct answer as it uses a simile, comparing the child's speed to that of a cheetah. Figurative language uses words or expressions with a meaning that is different from the literal interpretation, making the sentence more vivid and imaginative. In this case, the simile enhances the description of the child's speed by likening it to the swift and agile movement of a cheetah. Choices A, C, and D do not use figurative language. Option A is a straightforward statement about a scientist conducting an experiment without any figurative elements. Option C is a factual statement about a book having many pages without any figurative language. Option D is a clear explanation by a teacher without any figurative language present.

Correct Answer: D

Rationale: A compound-complex sentence consists of at least two independent clauses and at least one dependent clause. In option D, 'He enjoyed reading the book' is an independent clause, while 'because it was suspenseful' is a dependent clause, making it a compound-complex sentence. Choices A, B, and C do not meet the criteria for a compound-complex sentence as they either lack the required combination of independent and dependent clauses or do not contain multiple independent clauses.

Correct Answer: C

Rationale: The correct answer is C because the passage highlights how the internet and social media have revolutionized communication globally, enabling instant connections and sharing of information on a global scale. It emphasizes the transformative impact of these technologies on communication, not just entertainment or the complexity of technology. Choice A is incorrect as the passage focuses on communication, not entertainment. Choice B is incorrect as it oversimplifies the role of social media in communication. Choice D is incorrect as the passage does not specifically address the increasing complexity of technology.

Correct Answer: A

Rationale: Option A correctly uses the past perfect tense to show an action that was completed before another past action. In this sentence, 'the party had already begun' indicates that the party started before 'I arrived.' This structure is typical of the past perfect tense. Choice B uses the past perfect tense but does not demonstrate the sequence of actions in the past. Choice C uses the future perfect tense, indicating completion of an action by a future time. Choice D uses the past perfect continuous tense, not the simple past perfect tense required by the question.

Correct Answer: C

Rationale: In this sentence, 'important' is the positive form of the adjective. When comparing two things, the comparative form is used, which is 'more important' in this case. 'More important' indicates a higher degree of importance when comparing two things. Therefore, 'more important' is the correct comparative form of the adjective 'important' in this context. Choice A ('important') is the positive form, not the comparative form. Choice B ('importantly') is an adverb, not a comparative form of the adjective. Choice D ('most important') is the superlative form, used to show the highest degree of importance among three or more things, not for comparing two things.