【单选题】在20世纪50年代提出教育目标分类学理论的布鲁姆是哪个国家的人?
【单选题】下列预防艾滋病传播的说法是
D.
对艾滋病病毒感染者进行隔离,不让他们和别人接触
【单选题】The affixes which can only be conjoined with other morphemes and can never produce new words are
【单选题】关于破骨细胞的结构与功能,下列哪项错误( )
【单选题】Accordingto the passage,hearing loss is
A.
only aminor health problem.
B.
the world’smost common health problem。
C.
merelya teenage disease.
【单选题】The rich only ____ themselves in making money and had no eyes for the needs and welfare of their workers. [ ]