在陆地生态系统中，生物种类多，结构复杂，自动调节能力强的是[ ]
A．草原生态系统
B．沙漠生态系统
C．农田生态系统
D．森林生态系统
答案：D
A party was held ______ the heroes who had helped save thousands and thousands of lives in
the big earthquake in Sichuan. [ ]
A. in time of
B. in place of
C. in name of
D. in honor of
男性，52岁。患急性阑尾炎，右下腹疼痛，高热，烦渴欲饮，呕吐不食，大便秘结，小便黄，舌红苔黄燥，脉洪大而数。治疗应首选青霉素加
A．阑尾化瘀汤B．黄连解毒汤C．阑尾清解汤D．阑尾清化汤E．大承气汤
