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【单选题】
关于蛲虫下列哪项是错误的A.
生活史简单
B.
生活史需要中间宿主
C.
感染率儿童高于成人，城市高于农村
D.
带虫者和病人是传染源
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【简答题】What, then, is a good education at the end of the twentieth century? Some educators suggest that it should include foreign languages and the study of foreign cultures；a y of English, including t...
【单选题】Some educators are critical of the program because______.
A.
they don't think it fit for children in every respect
B.
it takes the children too much time to watch it
C.
it causes problems between children who have watched it and those who have not
D.
some parents attach too much importance to it
【单选题】Some educators try to put students of similar abilities into the same class because they believe this kind of ______ grouping is advisable.
A.
homogenous
B.
instantaneous
C.
spontaneous
D.
anonymous
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