【单选题】某厂有男工400人,女工200人,要从中抽取一个60人的样本,最好采取的抽样方法是()。
【单选题】Dick is the only one of the teachers who ____ Chinese. He is one of Mary’s friends who _____ been to China.
【单选题】A literacy animator is one who_____.
A.
struggles for a more meaningful life
B.
frees people from poverty and illiteracy
C.
is committed to marginalize the illiterate
D.
is concerned with what is behind illiteracy
【单选题】Jeremy Shu-How Lin, NBA star, is one of _____ few basketball players who are very popular to Chinese fans. [ ]