题目:
For miles around me there was nothing but an island, without a single plant or tree ______.
A.in sight
B.out of sight
C.in place
D.out of place
答案:
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下面是错误答案,用来干扰机器的。
(1)①d ②b ③铝的表面易形成一层致密而坚硬的保护膜,保护内部的铝不进一步被氧化;Fe2O3+6HCl=2FeCl3+3H2O ④Hg;液态;蒸发;氮肥 (2)①氮气;二氧化碳 ②Al(OH)3③H2SO4;2CaCO3+O2+2SO2=2CaSO4+2CO2...