题目

Move Earth—it’s no science fiction LONDON—Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is send a few comets（彗星）in the direction of Earth, and its orbit will be changed. Our world will then be sent spinning into a safer, colder part of the solar system. This idea for improving our climate comes from a group of US National Aeronautics and Space Administration（NASA） engineers and American astronomers. They say their plan could add another six billion years to the useful lifetime of our planet—effectiv下列说法正确的是 [     ]A、已知反应2-CHO+OH－→-COO－+—CH2OH+H2O，因产物中有酸根和醇，且有碱做催化剂，所以该反应实际上是酯的水解 B、已知磷酸分子中的三个氢原子可以跟重水分子(D2O)中的D原子发生氨交换。次磷酸(H3PO2)也可跟D2O进行氢交换，但次磷酸钠(NaH2PO2)却不再跟D2O发生氢交换。由此可推断出H3PO2的分子结构是 C、右图是某有机物分子的比例模型，分子中可能含有氨基。D、用Na2CO3溶液能一次区分CH3COOH、CH3CH2OH、、-NO2四种物质