At the age of three, children begin to produce two-word utterance.
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Children’s two-word expressions are absent of syntactic or morphological markers.
A. 对
B. 错
Children all over the world achieve the same level of language development.
A. 对
B. 错
Children are born with the pragmatic ability.
A. 对
B. 错
以下关于信息系统开发风险的评价正确的是( )
A. 规模大结构稳定的系统较之于规模小结构不稳定的系统风险小
B. 规模小技术新的系统较之于规模大技术旧的系统风险大
C. 结构稳定技术较新的系统较之于结构不稳定技术较旧的系统风险大
D. 结构不稳定技术较老的系统较之于结构稳定技术较新的系统风险大