Oliver lived in a flat in Holton city centre with his friend Peter.He liked good food,and he was tea
题目
Oliver lived in a flat in Holton city centre with his friend Peter.He liked good food,and he was teaching himself to cook.He planned a nice meal for Saturday night—chicken and chips with vegetables,followed by oranges in chocolate.
The chicken and vegetables went into the oven.Then he put the chocolate in a small pan,and put a big pan of oil on the cooker,for the chips.While it was getting hot,he started to peel the oranges.Just then,Peter came in.He started to tell Oliver about the football game.
Whoosh!The pan of oil,getting too hot,suddenly caught fire.At once,the fire was reaching the ceiling(天花板) and it seemed to jump onto Oliver’s shirtsleeve.Oliver shouted and threw himself on the floor.He rolled over on his burning sleeves,but the front of his shirt was already on fire.Peter caught a towel from the back of the kitchen door,and threw it over his friend.He knew you should never put water on an oil fire.Then he remembered the fire extinguisher outside the door of the flat.
答案
44.A
45.B
46.D
47.A
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
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