单项选择题
A．an essential .,. erudite
B．a determining ... preeminent
C．a pernicious ... mediocre
D．a conducive ... meritorious
E． a wholesome ... susceptible
单项选择题 People should not take good constitution for granted,for human genetic code is（）the development of （）
单项选择题 Griffith's early output was remarkably （）: it included not only the standard comedies, melodramas, westerns, and thrillers, but also such novelties as adaptations from Browning and Tennyson, and treatments of social issues.