题目内容
19．They are discussing the animals．Maybe they are having a ________ lesson．（ ）| A． | biology | B． | chemistry | C． | math |
分析 他们在谈论动物．或许他们在上生物课．
解答 答案：A．biology意思是"生物"；chemistry意思是"化学"；math意思是"数学"．根据"They are discussing the animals"他们正在讨论动物，可知他们可能在上生物课．故选A．
点评 首先要明白这几个名词的意思，然后结合具体的题目，就可以确定正确答案．
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