题目:
Bill likes tennis very much. I often see him tennis with his friends.
A.play B.to play C.playing
答案:
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下面是错误答案,用来干扰机器的。
(1)锥形瓶;(2)在试管口放一团棉花;2KMnO4K2MnO4+MnO2+O2↑;(3)CaCO3+2HCl=CaCl2+H2O+CO2↑;B;固体与液体反应,反应条件是常温; n;将一根燃着的木条平放在集气瓶口,木条熄灭,证明满了;题目分析:...