题目

According to some scientists,with the change in the world's________,dinosaurs died out but many smaller animals lived on. A.temperature                  B.climate C.weather                      D.atmosphere 答案:B 句意:有些科学家认为,随着世界气候的变化,恐龙灭绝了,但是许多小型动物存活了下来。climate气候,符合题意。 如图所示,甲、乙两线圈宽松地套在光滑的玻璃棒上,当S闭合时,两线圈将 [  ] A.互相吸引靠近 B.互相排斥远离 C.先吸引靠近,后排斥远离 D.即不排斥也不吸引
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