Scientists generally hold that language has been so long in use that the length of time writing is known to cover is______in comparison.
【正确答案】 D
【答案解析】本题巾,D项trifling“微小足道的”符合题意。其他三项overwhelming“压倒性的”,uninspiring“不鼓舞人的”,astounding“令人惊骇的”都不正确。