Although a herd of African elephants may have up to one thousand members, Asiatic elephants live in bands of five to sixty animals.

单项选择题Experiments enable young scientists to judge accurately what must be accepted and what must be viewed with suspicion.()

A. doubt
B. belief
C. curiosity
D. judgment

单项选择题The sensation of a lump in one's throat arises from an increased flow of blood into the tissues of the pharynx and larynx.