听话者的类型大致可分为漫听型、（）、技术型和积极型。
A.浅听型
B.专听型
C.深听型
D.激动型
参考答案：A
________pollution control measures are expensive, many industries hesitate to adopt them.
A．Although
B．However
C．Because
D．On account of
妊娠几周后妊娠囊消失（）
A.6周
B.7～8周
C.9～10周
D.11～13周
E.16周
