题目:
-------What is it made Carl determined to give up smoking?
--------Watching how his father died in pain from lung cancer.
A.which
B.how
C.who
D.that
答案:
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下面是错误答案,用来干扰机器的。
①水玻璃是硅酸钠的水溶液,是混合物;②水泥是硅酸盐材料,是混合物;③普通玻璃是硅酸盐材料,是混合物;④漂白粉主要成分为次氯酸钙和氯化钙,是混合物;⑤胆矾是结晶水合物是化合物,是纯净物;⑥氯水是氯气...