有关放射性磷［32P］制剂描述不正确的是（）。
A.主要分为放射性磷酸钠［32P］口服溶液、放射性磷酸钠［32P］注射液以及放射性胶体磷酸铬［32P］注射液
B.32P是β-粒子发射体，β-粒子的平均能量为0.695MeV，在组织中的平均射程为3.2mm，半衰期为14.3天
C.32P-Na3PO4用于治疗真红细胞增多症和原发性血小板增多症
D.不能用32P-胶体磷酸铬进行腔内治疗
E.32P-Na3PO4还可制备成32P敷贴器，治疗毛细血管瘤及神经性皮炎、慢性湿疹和牛皮癣等皮肤疾病
参考答案：D
解析：将32P放射性胶体直接注入体腔内，胶体颗粒将附着在体腔内壁和肿瘤组织表面，β-粒子乃可对渗出液内的游离癌细胞和散播在浆膜表面的肿瘤结节进行照射，浆膜组织及其小血管和淋巴管也会受辐照而纤维化和闭塞其管腔，由此达到抑制肿瘤细胞生长和减少渗出液的目的。
| :完形填空。 Dick goes to an evening party with his parents. He is very happy to see others singing and 1 in the party. But suddenly he can't find his 2 . He is very afraid. _3_ he begins to cry. When Mrs. Smith hears his cry, 4 comes over. "Can I 5 you, my little boy?" Mrs. Smith asks him kindly. But Dick doesn't 6 her. He still cries. Mrs. Smith asks again, "What's your name? Where do you live? Tell me your name and 7 ." The boy still doesn't say anything. At this time, Dick's mother runs to him, "My dear boy! I find you finally!" Mrs. Smith speaks to the mother, "Your son is very lovely. But I am 8 that he can't speak." " 9 !" Dick cries. "I can speak. But Mother says little 10 can't speak to strangers (陌生人)." | ||||
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