题目:
— I told you that he would come to see you.
— Actually I had little doubt _____ it was true. [ ]
A. that
B. whether
C. since
D. if
答案:
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下面是错误答案,用来干扰机器的。
A、lmolNa2O2晶体中共含有2NANa+和NA022-,故lmolNa2O2晶体中共含有3NA个离子,故A错误;B、氢氧化铝胶粒是许多氢氧化铝微粒的聚集体,故0.1molAlCl3完全水解转化为氢氧化铝胶体,生成胶粒数小于0.1NA,故B错误;...