据史料记载，明太祖朱元璋有一天问大臣：“天下谁人最快活？”有人答：“金榜题名者快活。”有人说：“功成名就者快活。”朱元璋听了都不以为然。当听到万钢说“畏法度者快活”时，朱元璋赞赏有加，随后对其委以重任。材料表明朱元璋

根据短文内容，判断正确还是错误。

       My name is Li Hong. I'm 16 years old. I have a lovely brother. His name is Li Qiang. He was short and thin two years ago. He was 1.58 m. He was 48 kg. He was a primary school student. He often watched TV and played games. He didn't like playing football. Now he is handsome. He is 14 years old. He is a junior high school student. He is 1.65m. He is 56kg. He is tall and fat. He is very strong, too. Sometimes he watches TV in the evening. He doesn't play games. He plays football and rides a bike every day.

气球以10m/s的速度匀速竖直上升，它上升到15m高处时，一重物由气球里掉落（以10m/s竖直上抛），则重物要经过多长时间才能落到地面？（不计空气阻力，g=10m/s²）

识读下列图文材料:

材料一

图1 把经济危机比喻为大章鱼

图2 经济危机中的德国

材料二 1930年5月,美国国会通过对890种进口商品提高征税的法案。到1931年年底,有25个国家采取报复措施,到1932年4月更增加到76国以上。1932年,英国在渥太华举行英联邦会议,决定在英帝国内部建立关税优惠制;法国则采取限额输入的办法,保护本国的商品市场。这就形成激烈的关税战、市场战、货币战。——吴于廑、齐世荣主编《世界史·现代史编》上卷

请完成: