员工卡开通短信通收费标准是().
A.包月3元
B.按条0.1元
C.不收费
参考答案:C
The little boy wrote a ______ letter to his uncle. [ ]
A. five-hundred-words
B. five-hundred-word
C. five-hundreds-word
D. five-hundreds-words
小学儿童正值注意有意性迅速发展阶段,注意的______能力表现出迅速发展的趋势。