单项选择题
1、 曲线y=lnx在点(e，1)处切线的斜率为(    )．
A．e2   
B．e    
C．1
D．1/e


2、 The little boy won’t go to sleep________his mother tells him a story．
A．since
B．when
C．lest
D．unless


3、根据下面内容，回答题：
Eggs are my favorite food. I like them 21, hard-boiled, scrambled, or poached. I eat eggs for 22, lunch, and dinner. I eat eggs here, there, and everywhere!
Eggs taste great. You can eat them by 23 or as part of any meal. Eggs are 24 used as an ingredient in many prepared foods. Can you think of any foods that contain 25 ?
Eggs are really a perfect food. They are 26 in most of the nutrients we need to maintain good 27 When a baby chicken develops 28 an egg, the egg 29 and yolk are the only foods they need.
Many people believe that eggs are 30. They point out that eggs contain a very high amount of cholesterol(胆固醇). Too 31 of one kind of cholesterol in our blood can cause heart disease.
There is no evidence that eggs 32 the harmful cholesterol in our blood. When we eat foods that are 33 in cholesterol, our bodies make 34 of it to balance, or adjust.
If you want to enjoy a tasty and healthy food, eat plenty of 35.

A．fried
B．cooked
C．eaten
D．decorated


4、 学习记忆比较长的材料，中间部分的内容记忆的效果差，是由于受到下列哪种干扰的影响?（　　）
A．前摄抑制
B．倒摄抑制
C．双重抑制
D．单一抑制


5、 百货公司向食品公司发出一订货单，订货单称，“愿以每斤60元的价格购买贵公司的牛肉干50斤”，后百货公司又发一电报给食品公司，电报称，“取消上次60斤牛肉干的订单”。电报早于订货单寄到食品公司。百货公司的行为是（　　）。
A．撤回要约
B．撤销要约
C．撤回要约邀请
D．撤销要约邀请


6、微分方程满足的特解是（　　）．
A．；
B．；
C．；
D．

7、《前赤壁赋》中“固一世之雄也，而今安在哉”中“一世之雄”是指（　　）
A．曹操           
B．刘备   
C．诸葛亮       
D．孙权


填空题
8、 设y=ln(a2+x2)，则dy=_______.


9、 过M(1，-l，2)且垂直于平面2x-y+3z-1=0的直线方程为_____.


简答题
10、

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