骨显像的适应证，下列哪种情况不属于这一范围()
A. 不明原因的骨痛
B. 前列腺癌，PSA＞10ng／ml
C. 临床可疑骨折，X线阴性
D. 类风湿关节炎非活动期
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A. Tegmark fears he may hold the record for the longest time taken to read one book.
B. In a more positive vein， this is a wonderful collection of essays to dip in and out of if you already have a good overview （概述） of current cosmic understanding.
C. Levy is an active astronomer and an accomplished writer， so you"d expect him to provide a broad and accurate picture of our current understanding of the cosmos.
D. Scientific American has attempted to cater to this need by bringing together essays that have appeared in the magazine.
E. To some extent， these could have been plugged with a glossary （词表）. of terms.
F. Also included are contributions on the world of subatomic particles， the origin of life on the Earth and the possibility of its existence elsewhere.
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