She got very angry ______ the sight of her husband walking with another woman.
A. by
B. at
C. on
D. of
检查氯化物时，应在酸性条件下进行，选用的酸应是
A. 硝酸液
B. 硫酸液
C. 盐酸液
D. 稀硝液
E. 稀硫酸
Which of the following statements about fast food is tree according to the passage
A. Fast food is nutritionally balanced.
B. Fast food can supply you enough protein and vitamins.
C. Fast food prevents people from being over-weight.
D. Fast food provides people more than enough sugar and salt.
下列关于凝胶剂叙述不正确的是
A. 凝胶剂是指药物与适宜的辅料制成的均一或混悬的透明或半透明的半固体制剂
B. 凝胶剂有单相分散系统和双相分散系统
C. 氢氧化铝凝胶为单相凝胶系统
D. 卡波姆在水中分散形成浑浊的酸性溶液
E. 卡波姆在水中分散形成浑浊的酸性溶液必须加入Na0H中和，才形成凝胶剂
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