室间隔缺损继发肺动脉高压，下列能最早称为艾森门格综合征的是（）。
A.当室水平发生右向左分流时
B.当右心室扩大并室壁增厚时
C.当室水平发生双向分流时
D.当右心房显著扩大时
E.当室水平发生左向右分流时
参考答案：C
解析：室间隔缺损继发肺动脉高压称为艾森门格综合征。室间隔缺损不伴肺动脉高压时是室水平发生左向右分流，继发肺动脉高压的早期室水平发生双向分流，严重肺动脉高压时室水平发生右向左分流。
How good projects grow ARE you interested in project（项目，课题） and want to have a good one? Well, that doesn’t come easily. You need to do the following tasks: TALK: You and your classmates discuss in detail（详细地） all that you would like to do to realize （实现）your project. WRITE: One of your classmates acts as （担任）secretary（秘书） . He or she keeps full notes as your group discusses. Later he or she will sort （整理）your ideas to make them better. PLAN: With the secretary’s notes, your group makes a list of everything you’ll need and who will get, do or research what. DO: Each group member gets, does and researches something on the list. Your group puts together all you have found and tried to make the project more well-organized. You prepare （准备）to present（展示） it in class. SHOW: You and your classmates show the world the result of your hard work. Knowing all the above , you may want to try a project. Why not start with this: you can find out more about the history of your city. What did it look like? Which famous people lived there?
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