题目内容

According to Saussure,______refers to the real utterances produced by real people in real

A. performance
B. langue
C. parole
D. competence

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The study of the sound patterns and sound systems of languages is called______.

A. phonetics
B. phonology
C. syntax
D. morphology

在相对湿度为56％时，水不溶性药物A与B的吸湿量分别为2g和3g，A、B混合后不发生反应，则混合物的吸湿量为()

A. 2．8g
B. 8g
C. 1．5g
D. 6g
E. 5g

The novel______addresses many of the social and intellectual issues facing African-Americans in the early twentieth century, especially the black identity.

A. Invisible Man
B. I Wonder as I Wander
C. Native Son
D. Not Without Laughter

当药物本身产生的饱和蒸汽压低于环境的水蒸气分压时，将产生()

A. 吸湿
B. 风化
C. 蒸发
D. 吸附
E. 降解