The murder remained an unanswered mystery.

There are still several unanswered questions with the accident.

As previously ______ (state), these unanswered questions suggest areas that are in need of further study.

______ (a figure of speech) is used in "Shall we allow these untruths to go unanswered, these misdeeds unreprimanded? No! "(Davis)

There are still several unanswered questions _________with the accident. A: connect B: to connect C: connected D: connecting

Which of the following words can replace “unrequited”as in “unrequited kindness or love”? A: Unanswered B: Unwanted C: Undone D: Unsaid

以下哪一种Rh抗原是不存在的- unanswered A: D抗原 B: d抗原 C: E抗原 D: e抗原 E: C抗原

One main branch of sea science, __, holds enormous unanswered questions. A: physical oceanography B: is physical oceanography C: called physical oceanography D: what is physical oceanography

A receptionist needs to answer phone calls, note down specific information or record as voice messages and ensure that no calls go __________. A: unanswered B: uncontrolled C: uncharted D: undecided

对支气管炎症过程有明显抑制作用的平喘药是：- unanswered A: 肾上腺素 B: 倍氯米松 C: 异丙肾上腺素 D: 沙丁胺醇