關(guān)于美國移民是否破壞了bison的數(shù)量。
【閱讀】美國移民破壞了bison的數(shù)量。
1. immigrants把bison做食物;
2. 移民時,帶了自己養(yǎng)的馬牛,和bison競爭;
3. 槍使得移民者比當(dāng)?shù)厝烁艽颢Cbison。
【聽力】逐一反駁。
1. 移民者沒有把bison當(dāng)做主要食物,事實表明bison decline首先表現(xiàn)在了eastern part, 與閱讀中所說的immigration route不一致,route是從west to east, 這樣的話decline應(yīng)該先出現(xiàn)在western part。所以不能證明bison是被作為主要食物;
2. bison比馬牛更適應(yīng)當(dāng)?shù)氐臍夂,天氣寒冷,bison有厚厚的毛,可以抵抗寒冷,而cattle and horses就不能與之競爭;
3. 當(dāng)?shù)厝丝梢跃珳?zhǔn)的shoot bison, nation used guns for hundreds of years。
➤Writing 2
Do you agree or disagree that parents should make suggestion to the teacher if parents find the teaching method is not right?