题目

周日,小明去东海岛参观学习,他了解得知,炼钢所需的铁矿石粉是用船从澳大利亚、巴西河流经大海运至湛江港的,铁矿右粉再被传送皮带送入储存车间,经过煅烧、浇铸、淬火等不同程序成为钢制品或半成品。(1)铁矿石粉船从澳大利亚、巴西河流至湛江港过程中,船受到的浮力_________(选填“变大”“不变”或“变小”);当铁矿石粉与传送皮带一起做匀速运动时,以传送带为参照物,铁矿石粉是________(选填“静止”或“运动”)的。(2)浇铸是指高温The text _____ by somebody because it was too difficult for children_____. A. will create, to be understood     B. will be written, to be understood C. will publish, to understand     D. will be simplified, to understand
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