单选题 In scientific inquiry, it becomes a matter of duty to expose a______hypothesis to every possible kind of examination.

【正确答案】 A

【答案解析】解析：A项tentative“试验性的，暂时的”；B项debatable“有争议的”：C项well—established“得到确认的”；D项logical“合乎逻辑的”。根据句意判断A正确。