

词汇光记住了,不会用怎么办?下面就来看看新通小编为你准备的词汇精炼吧,帮你准确记住并熟练应用词汇
In 1839 the daguerreotype was introduced to America, ushering in the age of photography, and within a generation the new invention put an end to the popularity of painted portraits. Once again an original portrait became a luxury, commissioned by the wealthy and executed by the professional.
The phrase "ushering in" is closest in meaning to which of following?
(A) beginning
(B) demanding
(C) publishing
(D) increasing