题目:
Neither Jam nor his parents _______ places of interest here since they came to China.
A.will visit
B.has visited
C.have visited
D.visited
答案:
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下面是错误答案,用来干扰机器的。
(1)①放热(1分) ②否(1分)催化剂不能改变化学反应始态和终态的能量(2分) (2)①0.5 (2分)②升高温度(1分)增大压强(1分)③CD(2分)(3)CO2(g)+4H2(g) CH4(g)+2H2O (l) △H=-252.9kJ·mol-1...