单项选择题
1、
A．A
B．B
C．C
D．D


2、Experiments of this kind in both the U.S. and Europe well before the Second World War.
A．have conducted
B．have been conducted
C．had conducted
D．had been conducted


3、— Happy birthday!
— Thank you! It’s the best present I for.
A．should have wished
B．must have wished
C．may have wished
D．could have wished


4、 To her joy, Della earned first the trust of her students and then _____ of her colleagues.
A．that
B．one
C．ones
D．those


5、 早进行环球航行的是（　　）
A．迪亚士
B．达·伽马
C．哥伦布
D．麦哲伦


6、阅读下列短文，回答题。
      Not many years ago, a wealthy and rather strange old man named Johnson lived alone in village in the south of England． He had made a lot of money in trading with foreign countries． When he was seventy-five ,he gave $1200 to the village school to buy land and equipment for a children's playground．
     As a result of his kindness, many people came to visit him． Among them was a newspaperman． During their talk, Johnson remarked that he was seventy-five and expected to live to be a hundred． The newspaperman asked him how he managed to be healthy at seventy-five． Johnson had a sense of humour (幽默)． He liked whisky (威士忌酒) and drank some each day． "I have an injection(注射) in my neck each evening," he told the newspaperman, thinking of his evening glass of whisky．The newspaperman did not understand what Johnson meant． In his newspaper he reported that Johnson was seventy-five and had a daily injection in his neck． Within a week Johnson received thou-sands of letters from all over Britain, asking him for the secret of his daily injection．
The gift of money to the school suggests that Johnson
A．had no children
B．was a strange man
C．was very fond of children
D．wanted people to know how rich he was


7、 常温下，某溶液中的氢离子浓度为1×10^-13mol·L^-1，此溶液中能大量共存的一组离子是(  )



8、 顶点在坐标原点，焦点在坐标轴上的抛物线上有一点P(2，-2)，则抛物线的方程为
A．y²=2x
B．x²=-2y
C．y²=-2x
D．y²=2x或x²=-2y

9、 已知a=(3，-1)，b=(1，-2)，C=(-1，7)，且P=a+b+c，则P等于
A．a-4b
B．2a-3b
C．3a-2b
D．2a+3b


填空题
10、 曲线Y=x2+x+c在点(0，c)处切线的倾斜角为 ．

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