初三提前招生是怎么回事？提招后还用参加二模和之后的考试吗？
2009\u5e74\u5317\u4eac\u5e02\u5ba3\u6b66\u533a\u521d\u4e09\u4e8c\u6a21\u8bd5\u9898\u5316\u5b66\u7684\u7b54\u6848\u5ba3\u6b66\u533a2008-2009\u5b66\u5e74\u5ea6\u7b2c\u4e8c\u5b66\u671f\u4e8c\u6a21\u8d28\u91cf\u68c0\u6d4b
\u4e5d\u5e74\u7ea7\u5316\u5b66\u53c2\u8003\u7b54\u6848\u53ca\u8bc4\u5206\u6807\u51c6
\u8bf4\u660e\uff1a\u8003\u751f\u7b54\u6848\u5982\u4e0e\u672c\u7b54\u6848\u4e0d\u540c\uff0c\u82e5\u7b54\u7684\u5408\u7406\uff0c\u53ef\u914c\u60c5\u7ed9\u5206\u3002
\u4e00\u3001\u9009\u62e9\u9898\uff08\u6bcf\u5c0f\u98981\u5206\uff0c\u517125\u5206\u3002\uff09
\u9898\u53f7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
\u7b54\u6848 C B A D B A B A D C A C B D B
\u9898\u53f7 16 17 18 19 20 21 22 23 24 25
\u7b54\u6848 C A D C B A A D C D
\u4e8c\u3001\u586b\u7a7a\u9898\uff08\u51715\u4e2a\u5c0f\u9898\uff0c\u6bcf\u7a7a1\u5206\uff0c\u517130\u5206\u3002\uff09
26\uff0e\uff08\u51714\u5206\uff09
\uff081\uff09\u6709\u673a\u5408\u6210\u9ad8\u5206\u5b50\uff1b\u767d\u8272\u6c61\u67d3
\uff082\uff09\u6da4\u7eb6\uff1b\u7f8a\u6bdb
27\uff0e\uff08\u51715\u5206\uff09
\uff081\uff09Na+
\uff082\uff09\u8868\u793a\u94a0\u5355\u8d28\u3001\u8868\u793a\u4e00\u4e2a\u94a0\u539f\u5b50\u3001\u8868\u793a\u94a0\u5143\u7d20\uff08\u7b54\u5bf92\u4e2a\u7ed9\u5206\uff09
\uff083\uff09+5\uff1b \uff084\uff09\u2460AC \u24612Na+2H2O= 2NaOH+H2\u2191
28\uff0e\uff08\u51716\u5206\uff09
\uff081\uff09\u6e29\u5ea6\uff1b\u6eb6\u5242 \uff082\uff09 \u2460B \u2461 C \uff1b D \u2462 3:1
29\uff0e\uff08\u51719\u5206\uff09
\uff081\uff09\u6d53\u76d0\u9178\u6613\u6325\u53d1
\uff082\uff09\u7ea2\u58a8\u6c34\u7684\u6db2\u9762\u4e59\u9ad8\u4e8e\u7532\u3001\u6f84\u6e05\u77f3\u7070\u6c34\u53d8\u6d51\u6d4a\u3002
\u6c27\u5316\u9499\u4e0e\u6c34\u53cd\u5e94\u653e\u70ed\u4f7f\u8bd5\u7ba1\u5185\u7684\u6c14\u4f53\u53d7\u70ed\u81a8\u80c0\uff1b\u6c22\u6c27\u5316\u9499\u7684\u6eb6\u89e3\u5ea6\u968f\u6e29\u5ea6\u7684\u5347\u9ad8\u800c\u964d\u4f4e\uff0c\u4e00\u90e8\u5206\u6c22\u6c27\u5316\u9499\u56fa\u4f53\u6790\u51fa\u3002
\uff083\uff09\u9178\u6027\u3001\u4e2d\u6027
\uff084\uff09\u2460\u84dd\uff1b\u2461NaCl\uff1bHCl
30\uff0e\uff08\u51716\u5206\uff09
(1) Ca(OH)2 ¬\uff0c Na2CO3 \uff082\uff09\u5316\u5408\u53cd\u5e94
\uff083\uff09Ca(OH)2¬ + Na2CO3 =CaCO3\u2193+2NaOH
2NaOH + CO2= Na2CO3 + H2¬O
Na2CO3 + 2HCl = 2NaCl+CO2\u2191+ H2¬O \u6216 Na2CO3 + H2SO4= Na2SO4+CO2\u2191+ H2¬O
\u4e09\u3001\u5b9e\u9a8c\u9898\uff083\u4e2a\u5c0f\u9898\uff0c\u6bcf\u7a7a1\u5206\uff0c\u517119\u5206\u3002\uff09
31\uff0e\uff08\u51716\u5206\uff09
\uff081\uff09\u5e7f\u53e3\u74f6\uff08\u96c6\u6c14\u74f6\uff09\uff1b \u7ea2\u78f7\u71c3\u70e7\u3001\u5192\u767d\u70df\uff0c\u6c34\u6d41\u5165\u5e7f\u53e3\u74f6\u3001\u6d41\u5165\u7684\u4f53\u79ef\u7ea6\u4e3a\u5e7f\u53e3\u74f6\u5bb9\u79ef\u76841/5 \uff1b 4P+5O2 2P2O5
\uff082\uff09\u68c0\u9a8c\u4e8c\u6c27\u5316\u78b3\u4e0e\u6c34\u80fd\u5426\u53d1\u751f\u5316\u5b66\u53cd\u5e94\uff08\u9a8c\u8bc1\u4e8c\u6c27\u5316\u78b3\u4e0e\u6c34\u53cd\u5e94\u7684\u4ea7\u7269\u663e\u9178\u6027\uff09
\uff083\uff09\u7ea2\u8272\u7c89\u672b\u53d8\u6210\u9ed1\u8272\uff1bFe2O3+3CO 2Fe+3CO2
32\uff0e\uff08\u51716\u5206\uff09
\u2460Na2CO3 \u548cNaOH\uff1bCa(OH)2
\u2461\u6d53\u786b\u9178\u3002
\u2462\u88c5\u7f6eA\u4e2d\u6325\u53d1\u51fa\u6c2f\u5316\u6c22\u6c14\u4f53\u4e0e\u88c5\u7f6eB\u4e2d\u7684\u78b3\u9178\u6c22\u94a0\u53cd\u5e94\u4ea7\u751f\u4e86\u4e8c\u6c27\u5316\u78b3\u6c14\u4f53\uff1b
\u7a7a\u6c14\u4e2d\u7684\u4e8c\u6c27\u5316\u78b3\u8fdb\u5165\u88c5\u7f6eD\u4e2d\u6c22\u6c27\u5316\u94a0\u6eb6\u6db2\u4e2d\u3002
\u5c06\u6d53\u76d0\u9178\u6539\u7528\u7a00\u76d0\u9178\uff08\u5728\u88c5\u7f6eD\u7684\u540e\u9762\u63a5\u4e00\u4e2a\u88c5\u6709\u78b1\u77f3\u7070\u7684\u5e72\u71e5\u7ba1\uff09\u3002
33\uff0e\uff08\u51717\u5206\uff09
\uff082\uff09
\u5b9e\u9a8c\u7ed3\u8bba
E \uff1aCuSO4
\u7ed3\u8bba\uff1a \u6eb6\u6db2\u5747\u5448\u78b1\u6027
Ca(OH)2+CO2 = CaCO3 \u2193+ H2O
NaHCO3
\uff083\uff09 NaOH \u548cNa2CO3 \uff1b
\u5b9e\u9a8c\u6b65\u9aa4 \u5b9e\u9a8c\u73b0\u8c61\u548c\u7ed3\u8bba
10oC\u65f6\uff0c\u5206\u522b\u53d615g\u7684A\u3001D\u4e24\u56fa\u4f53\u4e8e\u70e7\u676f\u4e2d\uff0c\u518d\u5206\u522b\u52a0\u5165100g\u6c34\uff0c\u5145\u5206\u6405\u62cc \u3002 \u82e5A\u6709\u90e8\u5206\u672a\u6eb6\uff0c\u56fa\u4f53D\u5168\u90e8\u6eb6\u89e3\uff0c\u5219A\u662fNa2CO3 \u3001B\u662fNaOH\u3002
\u82e5A\u5168\u90e8\u6eb6\u89e3\uff0c\u56fa\u4f53D\u6709\u90e8\u5206\u672a\u6eb6\uff0c\u5219A\u662fNaOH\u3001B\u662fNa2CO3\u3002
\u56db\u3001\u8ba1\u7b97\u9898\uff082\u4e2a\u5c0f\u9898\uff0c\u51716\u5206\u3002\uff09
34\uff0e\uff08\u51712\u5206\uff09 \u6839\u636e\u5316\u5b66\u5f0f\u8ba1\u7b97\u786b\u9178\u94f5\u7684\u8d28\u91cf\u5206\u6570\u3002
\u65b9\u6cd5\u4e00\u3001\u89e3\uff1a\u8bbe8.0 g \u6837\u54c1\u4e2d\u786b\u9178\u94f5\u7684\u8d28\u91cf\u4e3aX \u3002
X •[14\u00d72/132] •100%=8.0 g\u00d718.0%
X=6.8 g -------------------------------1\u5206
6.8/8.0\u00d7100% =85.0% --------------------------------1\u5206
\u65b9\u6cd5\u4e8c\u3001\u89e3\uff1a\u8bbe\u8be5\u6837\u54c1\u4e2d\u786b\u9178\u94f5\u7684\u8d28\u91cf\u5206\u6570\u4e3aX \u3002
100%:[14\u00d72/132] • 100%=X :18% ---------------------------------1\u5206
X =84.9% ---------------------------------1\u5206
35\uff0e\uff08\u51714\u5206\uff09
\uff081\uff09\u2460\u8fc7\u6ee4 ---------------------------------1\u5206
\u2461 \uff1c \uff1b \uff1d --------------------------------2\u5206
\uff082\uff09a = 1.32 g --------------------------------1\u5206
\u8fd9\u4e2a\u4e8c\u6a21\u6d77\u6dc0\u4e0d\u6392\u540d\uff0c\u4f60\u6700\u597d\u770b\u4e00\u6a21\u6392\u540d\u5427\uff01 \u800c\u4e14\u4e8c\u6a21\u9898\u6bd4\u8f83\u504f\uff0c\u6240\u4ee5\u770b\u6392\u540d\u7528\u5904\u4e0d\u5927\uff0c\u8fd9\u4e2a\u6210\u7ee9\u5927\u6982\u80fd\u4e0a\u77f3\u6cb9\uff0c\u5317\u822a\u4e00\u7c7b\u7684\uff0c\u77f3\u6cb9\u4eca\u5e74\u662f\u4e8c\u6a21453\u5de6\u53f3\u80fd\u76f4\u5347\u672c\u6821\uff0c\u4e5f\u5c31\u662f\u8bf4453\u6309\u7167\u53bb\u5e74\u7684\u6392\u540d\u80fd\u4e0a\u77f3\u6cb9\u4e00\u7c7b\u7684\u2026\u2026
\u6ca1\u529e\u6cd5\u554a\uff01\u6d77\u6dc0\u5b66\u751f\u592a\u591a\uff0c\u4f60\u8981\u662f\u5728\u897f\u57ce\uff0c\u8fd9\u5206\u5c31\u80fd\u4e0a\u91cd\u70b9\uff0c\u771f\u7684\uff0c\u6211\u5c31\u662f\u8fd9\u5c4a\u7684\uff0c\u81ea\u5df1\u7684\u4e8b\u8fd8\u4e0d\u6e05\u695a\uff1f
如果中考考得好的话有些学习校还会给奖学金【我们班有两个同学都是这情况】
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