問題詳情
__21__reports have suggested coronavirus is a leaked biological weapon. The most popular ___22___that the virus was __23___ in a laboratory and has been __24___, or that coronavirus is abiological weapon manufactured by the US government to increase demand for vaccines. None of thesetheories have been __25___.
【題組】21.
(A) Uncomplicated
(B) Unconfirmed
(C) Unconcluded
(D) Unconditioned
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增