题目

设计计划有利于设计工作的顺利实现，一般情况下设计计划主要包括以下几个环节：①使用和维护，②制作模型，③制定设计方案，④测试、评估及优化，⑤发现与明确问题。这几个环节合理的顺序应该是（ ） A . ①③④⑤② B . ⑤③②④① C . ③②①④⑤ D . ②④⑤③① 答案：BRockfield High Sch ool Monday  Tuesday Wednesday   Thursday    Friday8:10    English Eng lish    Math    Spanish Biology9:00    Math    Math    Self-study  Math    Self-study10:00   Biology Biology Spanish Art Math10:40   Self-study  Art P.E.    Biology English12:20   Lunch   Lunch   Lunch   Lunch   Lunch1:10    P.E.    Self-study  English Self-study  P.E.2:00    Spanish Spanish Biology English Spanish小题1:They have _______ lessons at 10:00 on Wednesday morning.A．artB．BiologyC．SpanishD．P.E.小题2:They begin their math lesson at ________ on Thursday morning.A．8:10B．9:00C．9:50D．10:40小题3:What time do they have art lesson on Tuesday?A．At 9:00B．At 10:00C．At 2:00D．At 10:40小题4:On Friday morning students don’t have _______ lesson.A．biologyB．SpanishC．mathD．English