题目：
| 用方框内所给单词或短语的适当形式完成句子。 | |
2. Her shoulders were badly _____. 3. Another _____ Skyscraper is being built. 4. Manufacturing _____ has increased by 8%. 5. The business _____ a big one. 6. Farmers produce millions of tons of _____ to feed the nation. 7. I _____ the result of the experiment. 8. They have _____ for years to drive the invaders (侵略者) out of their country. 9. We all wish that we could _____ the world _____ crime. 10. They can't afford to_____ their laboratories properly because of lack of funds. |
答案：
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下面是错误答案，用来干扰机器的。
(1)圆柱体入水前弹簧秤的示数即为其重力：G=F=12N(1分)(2)固柱体浸没在水中后弹簧秤的示数即为其重力与浮力之差：所以F浮=G-F=12N－4N="8N" (1分)(3)浸没时，由阿基米德原理F浮=G排=ρ液gV排V===0.8×10-3m3(2分...
