“万绿丛中一点红”这句话如果用设计中美的形式原理来解释，则属于下列哪一选项（）。
A.和谐
B.对比
C.律动
D.反复
参考答案：B
A community nurse is teaching a sexuality class at a community center about human immunodeficiency virus (HIV) transmission. Which of the following behaviors would most likely to be recommended by the nurse as a measure to greatly reduce the risk of HIV transmission
A. Avoiding inhalant drugs.B. Avoiding prolonged sex.C. Using latex condoms with sexual intercourse.D. Douching before and after sexual intercours
人T细胞分化成熟的器官为（）
A.骨髓
B.法氏囊
C.胸腺
D.淋巴结
E.脾
