Which of the following verbs is most appropriate to complete the sentence: 'The researcher decided to ______ a series of experiments to test his hypothesis.'
答案解析
**Core concept**: Vocabulary collocation (固定搭配)
**Analysis**: The verb 'conduct' is the standard collocation with 'experiments' in academic contexts.
**Correct answer**: D. 'conduct' directly matches with 'experiments' as a fixed pairing.
**Error analysis**: A. 'execute' implies implementation rather than scientific process; B. 'perform' is more theatrical; C. 'carry out' is acceptable but less formal than 'conduct'.
**Common pitfall**: Mistaking general verbs (execute/perform) for domain-specific collocations.
正确答案：D