Correct Answer: B

Rationale: The past tense of the verb 'discover' is 'discovered.' In this case, the scientist already found a new species of butterfly, indicating a past action. 'Discovered' is the correct past tense form of 'discover.' The other options do not represent the past tense form of the verb. 'Discovers' is present tense, 'discovering' is present participle, and 'discovery' is a noun, not a verb tense.

Correct Answer: B

Rationale: The correct answer is B: 'To agree or understand each other.' The phrase 'to be on the same page' is an idiom that means to agree or understand each other. It implies being in sync or having a shared understanding with someone else. Choice A, 'To be physically close,' is incorrect as the phrase does not refer to physical proximity. Choice C, 'To be sharing the same goal,' is incorrect because while being on the same page may involve a shared goal, it primarily emphasizes agreement or mutual understanding. Choice D, 'To be facing the same direction,' is incorrect as it does not capture the essence of mutual agreement or understanding conveyed by the idiom.

Correct Answer: A

Rationale: Alliteration is the repetition of the initial consonant sound in neighboring words. In the sentence 'The quick brown fox jumps over the lazy dog,' 'quick' and 'brown' both start with the 'k' sound, but only 'quick' aligns with the definition of alliteration as it repeats the 'k' sound found at the beginning of the words.

Correct Answer: B

Rationale: The modal verb 'should' is used to imply an intention or expectation in the present or near future. Option B, 'I should be going now,' correctly conveys such a meaning, indicating the speaker's intention to leave at the current moment. Choices A, C, and D refer to past actions or future arrivals, which do not align with the appropriate usage of 'should' in this context. Therefore, option B is the only sentence that uses the modal verb 'should' correctly.

Correct Answer: C

Rationale: The main function of transition words and phrases in writing is to connect ideas smoothly and guide the reader's flow. They serve to establish logical relationships between different parts of the text, ensuring coherence and facilitating a clear progression of thoughts. Choice A is incorrect as transition words are meant to enhance clarity and coherence, not add unnecessary embellishments. Choice B is incorrect because while transition words can provide emphasis, their primary role is in facilitating the flow of ideas. Choice D is also incorrect as introducing opposing viewpoints and counterarguments is typically done through different means such as specific phrases or signal words.