问题
选择题
反应2X(g)+Y(g)
2Z(g)（正反应为放热），在不同温度（T1和T2）及压强（P1和P2）下，产物Z的物质的量n(Z)与反应时间t的关系如图所示，下述判断正确的是
答案
答案：C
压强越大、温度越高，反应速率越大，达到平衡所需时间越短，故“谁大谁先拐”；比较上面两条曲线可知，P1＞P2；比较下面两条曲线可知T1＞T2，故答案为C
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反应2X(g)+Y(g) 2Z(g)（正反应为放热），在不同温度（T1和T2）及压强（P1和P2）下，产物Z的物质的量n(Z)与反应时间t的关系如图所示，下述判断正确的是
答案：C
压强越大、温度越高，反应速率越大，达到平衡所需时间越短，故“谁大谁先拐”；比较上面两条曲线可知，P1＞P2；比较下面两条曲线可知T1＞T2，故答案为C
Tom and Gina usually go to school by car .They drive(驾车) pasta cinema a supermarket a post office. The post office is next to the supermarket on Center Street .Mary and Ann usually go to school by bus. They go down Sixth Avenue, past a bank and a library. The bank is across from the library. Jenny usually goes to work by bike,he rides(骑车) past a hotel and three streets．
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