题目内容

母体抗体经胎盘进入胎儿循环称为

A. 自然主动免疫
B. 人工主动免疫
C. 自然被动免疫
D. 人工被动免疫
E. 自身免疫

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恙虫病的传播媒介为

A. 虱
B. 蚤
C. 蚊
D. 恙螨
E. 以上均可

下列与维持细菌形态有关的结构是

A. 细胞壁
B. 细胞浆
C. 荚膜
D. 细胞膜
E. 细胞膜和细胞壁

下列哪一类疾病的病因与疱疹病毒属无关

A. 唇疱疹
B. 生殖器疱疹
C. 水痘
D. 巨细胞包涵体病
E. SARS

What does it mean to obey the law That 1 where you are. Different cultures have very different views of obeying the law. In some cultures, law-abiding citizens try to keep the letter of the law. That is, whatever the law says, they do. In other cultures, good citizens live by the 2 of the law. They see the law only as a general 3 . Often they obey the law only when someone official is looking. The situation in America fits into the first 4 . That doesn"t mean all Americans keep the law. But American culture teaches people to respect the law—even to the smallest detail.Driving habits 5 American respect for the law. A driver will usually stop for a red light, even when there are no other cars around. People treat the lines marking streets and roads as 6 boundaries, not just decorations. Vehicles yield to those with the right of way—particularly pedestrians. Actually, though, drivers don"t always keep traffic rules. For example, many drivers 7 freeway speed limits. But Americans generally drive with careful attention to the traffic rules.Of course, not everyone in America abides by the law. Crime is a growing problem. For that reason, law enforcement officials will never 8 a job. Police officers have their hands full trying to arrest lawbreakers. Detective agencies spend countless hours trying to 9 unsolved crimes. Nevertheless, most Americans still like to believe that the law will 10 catch the bad guys.

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