题目内容

建筑用碳素结构钢牌号Q×××（如Q235）表示钢材的（）。

A. 极限强度
B. 屈服强度
C. 剪切强度
D. 化学成分

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Sound changes may include the loss of a sound or sounds. The so-called apocope refers to the omission of a vowel segment________. ( )

A. in word-initial
B. in word-middle
C. in word-final
D. in syllable-initial

In contrast to Standard American English, Black English is the distinct variety of English native to black populations in the USA. We regard Black English as________. ( )

A. a regional dialect
B. a social dialect
C. a situational dialect
D. an ethnic dialect

Among the language centers, ______is responsible for physical articulation of utterances. ( )

A. the motor area
Broca’s area
C. Wernicke’s area
D. the angular gyrus

严寒地区处于地下水位升降变化范围内的混凝土结构施工时，应优先选用（）水泥配制混凝土。

A. 矿渣
B. 普通硅酸盐
C. 粉煤灰
D. 火山灰