请根据下图所示的研究方案，回答下列问题： 这是什么类型的设计 请根据下图所示的研究方案，回答下列问题： 这是什么类型的设计

请根据下图所示的研究方案回答下列问题：

(1)这是什么类型的设计?(2)该类型设计有何优缺点?

A. 小，稳定

B. 小，不稳定

C. 大，稳定

D. 大，不稳定

根据提供的信息和语言素材设计教学方案。用英文作答。 设计任务：请阅读下面的学生信息和语言素材，根据提供的信息和语言素材设计教学方案。用英文作答。 设计任务：请阅读下面的学生信息和语言素材，设计一个30分钟的英语写作教学活动该方案没有固定格式，但须包含下列要点： teaching objectives teaching contents key and difficult points major steps and time allocation activities and iustifications 教学时间：30分钟 学生概况：某城镇普通中学八年级（） John36 Fill in the blanks in this thank-you note. Dear Sarah， for inviting me to your house on Friday. I reallymeeting your family.And your baby sister is really______. I had atime. I‘m. I had to leaveearly， but I had a family dinner. My grandfather was having his 90th tirthday party! Yours sincerely， Maria

A．CaSO4

B．β-CaSO4·1/2H2O

C．CaSO4·2H2O

D．α-CaSO4·1/2H2O

The myor of smll town in southern Itly hs forbidden residents to die, ______ there is no grveThe myor of smll town in southern Itly hs forbidden residents to die, ______ there is no grveyrd for them to be buried in.s if B．becuse C．if D．where

A．as if

B．because

C．if

D．where