Out of the crowded bus , who was dressed in a black suit and waved to a woman. A. a tall man in his thirties stepped B. stepped a tall man in his thirties C. did a tall man in h
Brenda Bongos was a happy, artistic girl. She had one big ambition—to play the drums in a band. But one big problem lay in her way. To be good enough to play in a band, Brenda had to practice a l
关于机械效率，下面说法正确的是:A. 功率越大的机械，机械效率越高;B. 机械效率大小与功率大小有关;C. 机械效率越低的机械，做的功就越少;D. 由于
泰山日出是旭日东升的壮观景象，宋代词人梅圣尧有“晨登日观峰，海水黄金熔，浴出车轮光，随天行无踪”的绝句描述这一奇观。回答一年中，泰山
下列地理事物由板块张裂运动形成的是（ ） A. 地中海 B.太平洋 C.红海 D.喜马拉雅山
（09年济宁质检一文）如果执行如图所示的程序，那么输出的值 ▲ .
近年来，我国对外贸易快速发展，外贸总额已跃居世界第一位。目前，中国已成为日本、韩国、东盟、欧盟等国家和地区第一大贸易伙伴。读下表并回
已知向量则不等式的解集为 （ ） A． B． C． D
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