下列估测与事实接近的是（ ）A．小汽车速度可达100m/sB．人的体积约为0.5m3C．物理书长为26cmD．姚明
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A\u3001\u4e2d\u5b66\u751f\u6b65\u884c\u7684\u901f\u5ea6\u57284km/h=4\u00d713.6m/s\u22481.1m/s\u5de6\u53f3\uff0e\u4e0d\u7b26\u5408\u5b9e\u9645\uff1bB\u3001\u4e00\u5c42\u697c\u7684\u9ad8\u5ea6\u57283m\u5de6\u53f3\uff0c\u6559\u5ba4\u7684\u9ad8\u5ea6\u4e0e\u4e00\u5c42\u697c\u5dee\u4e0d\u591a\uff0c\u57283m\u5de6\u53f3\uff0e\u7b26\u5408\u5b9e\u9645\uff1bC\u3001\u5c0f\u6c7d\u8f66\u5728\u9ad8\u901f\u516c\u8def\u4e0a\u884c\u9a76\u7684\u901f\u5ea6\u53ef\u4ee5\u8fbe\u5230120km/h\uff0c\u4f46\u4e0d\u662f120m/s\uff0e\u4e0d\u7b26\u5408\u5b9e\u9645\uff1bD\u3001\u4e2d\u5b66\u751f\u7684\u8eab\u9ad8\u5728160cm\u5de6\u53f3\uff0c\u8bfe\u684c\u7684\u9ad8\u5ea6\u5927\u7ea6\u662f\u8eab\u9ad8\u7684\u4e00\u534a\uff0c\u572880cm=8dm\u5de6\u53f3\uff0e\u4e0d\u7b26\u5408\u5b9e\u9645\uff0e\u6545\u9009B\uff0e
A、小汽车速度一般可达100km/h，速度100m/s太快了．故A错误；B、人体的密度与水的密度差不多ρ=1.0×103kg/m3，正常成年人的质量m=50kg左右，所以人体的体积约为V=
| m |
| V |
| 50kg |
| 1.0×103kg |
C、初中物理课本的长一般为26cm左右．故C正确；
D、姚明身高为2.26m=226cm．故D错误．
故选：C．
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