城镇燃气管道分部工程宜按（）划分成若干个分部工程。
A.管道材质
B.工程规模
C.长度
D.专业
E.部位
参考答案：C, D, E
婴幼儿及儿童的视觉检查包括哪些内容?意义何在?
She saw an advertisement for volunteers at her local gym and as she is interested in the whole area of
diet and exercise, she thought she would ________. [ ]
A. help out
B. hang out
C. try out
D. hand out
