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【单选题】
唾液的缓冲能力直接关系到口腔内环境的pH值，而pH值的高低决定的龋病的发病率，以下说法正确的是A.
唾液pH5～7，龋危险性高，缓冲能力低
B.
唾液pH4～5，龋危险性低，缓冲能力中
C.
唾液pH<4，龋危险性中，缓冲能力高
D.
唾液pH4～5，龋危险性高，缓冲能力中
E.
唾液pH5～7，龋危险性低，缓冲能力高
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【单选题】It was an exhibition _________ French paintings.
A.
composing of
B.
composed
C.
composed of
D.
made of
【单选题】Musicians are exploring new ways of ______.
A.
composing on the web
B.
featuring their music on the web
C.
selling their work on the web
D.
getting in touch with the consumers directly
【简答题】When composing the music, the foreign composer was ________(深爱中国民族音乐启发).
【单选题】The character “ 好 ” is a ______ based on the way of composing it.
A.
hieroglyph
B.
associative compound
C.
self-explanatory character
D.
pictophonetic character
【简答题】The Composing of the Daily Energy Usage in a Village 某农村的日常用能构成 A.Study the chart carefully and write an essay of 160-200 words. B.Your essay should cover these three points: 1)the composing of the en...
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