患者,男性,25岁,先发热39℃,出现右下腹痛,有腹泻3~4次/日,但无腹肌紧张及反跳痛。下列疾病中,最可能的是
A. 急性阑尾炎
B. 急性肠炎
C. 回盲部淋巴结炎
D. 痢疾
E. 节段性肠炎
查看答案
遗传密码中的终止密码子是
AUU
B. GUA
C. AUG
D. UCA
E. UGA
合成脂酸的关键酶是
A. 乙酰乙酸硫激酶
B. HMG-COA还原酶
C. 乙酰COA羧化酶
D. HMG-COA裂解酶
E. HMG-COA合成酶
登革热病毒传播媒介是
A. 蚊
B. 蜱
C. 蚤
D. 虱
E. 螨
The term "natural law " as it appears in the text refers to______.
A. common sense
B. the result of an induction
C. the order of nature
D. a scientific discovery