Which of the following words is closest in meaning to 'decline' in the context of formal writing?
easy选项：A. diminish B. refuse C. descend D. reduce
Choose the correct subordinating conjunction: ______ the financial report was completed, the board made new decisions.
easy选项：A. Although B. After C. Unless D. Whereas
Which tense should be used in this sentence: 'The company ______ new markets since 2020'?
easy选项：A. explores B. has been exploring C. had explored D. was exploring
Which of the following verbs is closest in meaning to 'merge into' in the context of corporate restructuring?
easy选项：A. separate into B. consolidate into C. oppose to D. distinguish from
Which phrase correctly translates '应对压力' into English?
easy选项：A. prevent stress B. cope with stress C. avoid stress D. create stress
Which noun form corresponds to the verb 'respond'?
easy选项：A. Responsibility B. Respondent C. Response D. Responsive
Which conjunction best completes this sentence: 'Female rats exhibited higher stress responses, _____ they produced more chemicals.'
easy选项：A. because B. therefore C. although D. meanwhile
Which tense is correctly used to describe general scientific findings?
easy选项：A. Past Simple B. Present Perfect C. Present Simple D. Future Continuous
Which of the following words is closest in meaning to 'trigger' in the context of chemical reactions?
easy选项：A. Prevent B. Activate C. Reduce D. Observe
Select the most accurate translation: 'This discovery has led to significant changes in theoretical frameworks.'
easy选项：A. 这一发现导致理论框架的重大变化。 B. 这一发现被理论框架重大改变。 C. 这一发现从理论框架重大变化而来。 D. 这一发现和理论框架变化同时发生。
Choose the correct conjunction: Professional physicists ______ formed national associations, ______ amateur researchers often work independently.
easy选项：A. have; whereas B. had; although C. will; unless D. are; because
Which word best completes the sentence: The new policy will ______ the importance of teamwork in scientific research.
easy选项：A. increase B. improve C. reinforce D. expand
Identify the correct spelling of the noun form meaning 'the act of speaking formally':
easy选项：A. Speach B. Speesh C. Speech D. Speach
Which sentence demonstrates correct use of the past perfect tense?
easy选项：A. She had finished work when the phone rings. B. By 2020, they had already developed the prototype. C. I have seen that movie yesterday. D. He has been working here since 2015.
Choose the correct collocation: 'The discovery ______ widespread debate.'
easy选项：A. sparked B. created C. made D. produced
Which word is closest in meaning to 'sphere' when referring to a field of activity?
easy选项：A. Circle B. Globe C. Domain D. Orb
Which of the following sentences uses the verb 'spend' correctly?
easy选项：A. She spends two hours to read every morning. B. He spent his vacation learn Spanish. C. They will spend the weekend repairing the car. D. I spent three days to finish the report.
In 'Without proper guidance, students might misunderstand complex concepts,' what is the function of the introductory phrase?
easy选项：A. Subject complement B. Conditional clause C. Adverbial modifier D. Direct object
What type of clause is used in: 'Studies show regular exercise improves mental health.'?
easy选项：A. Adverbial clause B. That-clause (omitted 'that') C. Relative clause D. Conditional clause
Which part functions as the subject in the sentence: 'The recently passed Environmental Protection Act significantly reduces industrial emissions.'?
easy选项：A. recently passed B. Environmental Protection Act C. significantly reduces D. industrial emissions