填空题How tall was the robber
单项选择题How many email messages did Americans send in 1999
单项选择题Whom is the talk addressed to
单项选择题What is the topic of the man’s research paper
填空题When did the man be robbed
填空题8:00 eight
单项选择题Which of the following about the 97% population is true
单项选择题How is in the investigations carried out by historians in 1950s different from previous studies
单项选择题According to the text, Case history is
单项选择题The difficulty of lack of materials for researching on the 97% population was solved by