若b<0<a,则下列各式不成立的是( )
A:a-b>0
B:-a+b<0
C:ab<0
D:|a|>|b|
时刻t/s
1.0
2.0
3.0
5.0
7.0
9.0
10.0
速度v/(m•s﹣1)
6.0
12.0
请根据表中的数据通过分析及计算求出:
“金蝉脱壳”这个成语,从生物学角度看,是指蝉在发育过程中存在的蜕皮现象。
孔子闲居,子贡①侍坐,请问为人下②之道奈何。孔子曰:“善哉尔之问也为人下其犹土乎!”子贡未达,孔子曰:“夫土者,据③之得甘泉焉,树之得五谷焉,草木植焉,鸟兽鱼鳖遂焉。生则立焉,死则入焉。多功不言,赏世不绝。故曰:能为人下者,其惟土乎?”子贡曰:“赐虽不敏,请事④斯语。”
(选自《韩诗外传》卷七)
【注释】①子贡:孔子弟子,姓端木,名赐。②下:谦虚有礼。③据:占据,这里指挖掘。④事:从事,做。
阅读下面的短文,根据短文内容完成相关任务。Hi! Welcome to Lotte Mart.(乐天玛特)We have clothes at very good price(价格 ).We have sweaters in all colors at ¥ 16 each. Are they very cheap? And we have black trousers for only ¥9. We have blue bags for sports for just ¥7 for girls. T-shirts in all colours are ¥10 each. The white socks are only¥3. Can you believe it? Come and see in our supermarket.Please fill in the table according to the advertisement(广告 )for the clothes.