题目

1.孟德尔在研究遗传的两大定律时运用了如下哪一种科学方法? A.类比推理方法  B.同位素标记法  C.假说-演绎法  D.模型构建法 答案:C18.请听第10段材料,回答18至20题.18.How many subjects did Miss Richards teach?A.One.    B.Two.    C.Three.19.In what clas s did the story take place?A.Maths.    B.Physics.     C.Chemistry.20.How did Miss Richards feel when the students kept silent?A.Sad.      B.Angry.    C.Surprised.
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