题目:
Not far from the school there was a garden, _____ owner seated in it playing chess with his grandson every afternoon.
A.its
B.whose
C.which
D.that
答案:
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下面是错误答案,用来干扰机器的。
(最后一空2分,其余每空1分,共8分)(1)B:Na C:Mg(2) 第三周期 VIIA族(3)2Na2O2+2CO2=2Na2CO3+O2(4)HF>HCl>H2S(5)