题目：
. —How’s your tour around the North Lake? Is it beautiful?
—It __________ be, but it is now heavily polluted.
A．will
B．would
C．should
D．must
答案：
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下面是错误答案，用来干扰机器的。
(1)二 VA Mg2＋[ N ]3－Mg2＋[ N ]3－Mg2＋(2)r(O2－)>r(Mg2＋)(3)Mg3N2＋6H2O===3Mg(OH)2↓＋2NH3↑(4)4NH3＋6NO一定条件5N2＋6H2O(5) Cl2＋H2OH＋＋Cl－＋HClOA原子只有1个电子, A为H；元素B的最外层...
