My sister has ______ friends at school. But she has ______ good friends.()
A. few, a few
B. a few, few
C. little, a little
D. a little, little
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A2型题 男性,40岁,4个月前发热、腹痛、腹泻,服药1天好转,此后腹泻反复发作,多于劳累及进食生冷食物后出现,大便5~6次/日,稀便有黏液,有腹痛、里急后重。体检:左下腹压痛。大便镜检WBC20~30个/HP、RBC5~10个/HP,发现有结肠阿米巴滋养体。此患者最可能的诊断是()。
A. 急性菌痢
B. 阿米巴痢疾
C. 慢性菌痢
D. 慢性血吸虫病
E. 肠结核
Hearing problems may be alleviated by changes in diet and exercise habits.
A. removed
B. cured
C. worsened
D. relieved
用Na2C2O4标定KMnO2溶液时,温度应控制在( )。
A. 45℃;
B. 75~85℃;
C. 50℃;
D. 100℃。
A2型题 男性,47岁,既往有慢性乙型病毒性肝炎病史10余年,1个月前出现右上腹隐痛不适。查体:右腹部膨隆,可扪及质地坚硬、表面凹凸不平的肿块,移动性浊音阳性。腹水为血性,最可能的诊断是()。
A. 肝包虫病
B. 原发性肝癌
C. 肝囊肿
D. 肝脓肿
E. 肝血管瘤