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【单选题】
According to the author, African-Americans filmmakers have failed to take which of the following steps in properly promoting African-American cinema?A.
They have failed to demonstrate to studio executives the market potential of their films.
B.
They have failed to express ideological issues in their films that could attract potential audiences.
C.
They have neglected to use genuine African-American music as a force in their films.
D.
They have exploited stereotypes about African-Americans for the gain of themselves, but not the genre.
E.
They have failed to depict the African-American experience in an artistically engaging manner.
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【单选题】关于成釉细胞的描述,错误的是
A.
高尔基复合体体积增大
B.
粗面内质网数量明显增加
C.
线粒体集中在细胞的近中端
D.
细胞核靠近基底膜
E.
细胞与中间层细胞以桥粒连接
【单选题】关于成釉细胞瘤的描述错误的有
A.
外周型成釉细胞瘤复发率较低
B.
单囊性成釉细胞瘤复发率较低
C.
成釉细胞瘤可形成釉质
D.
实性型/多囊性成釉细胞瘤是经典成釉细胞瘤的代表
【单选题】预防会阴撕裂的关键是
A.
协助胎头俯屈，让胎头以最小径线在宫缩间歇时缓慢通过阴道口
B.
协助胎头俯屈，让胎头以最小径线在宫缩间歇时快速通过阴道口
C.
协助胎头内旋转，让胎头顺序通过出口平面，宫缩间歇时缓慢通过阴道口
D.
协助胎头仰伸，让胎头以最小径线适应产道娩出
E.
协助胎头内旋转，让胎头以最小径线宫缩时通过阴道口
【简答题】预防会阴撕裂的关键是
【单选题】创设情境要考虑贴近学生生活,形式新颖,简而易行。但最重要的一点是应能______。
A.
反映所学材料的社会环境
B.
帮助学生理解和巩固所学材料的内容
C.
使学生在愉快的氛围中学有所获
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