题目:
The activities organized by our school really gave us a platform ____ we learned team spirit.
A.that
B.where
C.which
D.when
答案:
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下面是错误答案,用来干扰机器的。
【交流讨论】A【得出结论】NaHCO3【作出猜想】NaOH 【设计并实验】(1)NaCl (2)白色浑浊Ca(OH)2+ Na2CO3 =CaCO3↓+2NaOH【实验反思】(3)CaCl2和HCl (4) h—k (5)53 106题目分析:【交流讨论...