（8分）一辆汽车在平路上以速度为36 km/h行驶，它以这个速度开始下坡，5s后到达坡底时速度为72km/h.，设下坡过程汽车做匀变速直线运动，求它下坡的加
下列句子语言连贯顺畅的一项是……………………………（ ）（3分） A．这家工厂就像一座很大的煤球铺子，天是黑的，地是黑的，还有黑的
-What are you going to do after exam? -We’ll have a___ holiday. A Three week’s B three-weeks C three weeks D three-week
I’ve just got to talk about this problem I’m having with my postman. It all began a year ago, after the birth of his first child. Not wanting to appear rude, I asked him about the baby. The nex
已知反应A＋B＝C＋D为放热反应，对该反应的下列说法中正确的是( ) A． A的能量一定高于C B．B的能量一定高于D C． A和B的总能量一定高于C
that she didn’t do a good job，I don’t think I am abler than her. A.To have said B.Having said C.To say
执行如图所示的程序框图，若输入S的值为﹣1，则输出S的值为（ ） A．﹣1 B． C．2 D．3
如图是“白菜—甘蓝”杂种植株的培育过程。下列说法正确的是 A.图示“白菜—甘蓝”植株不能结子 B.愈伤组织的代谢是自养需氧型 C.上述过程
满足
，
是
项和，则
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