试题与答案

阅读理解。阅读短文,判断正误。正确的写(T),错误的写(F). Mr Jone

题型:阅读理解

题目:

阅读理解。

阅读短文,判断正误。正确的写(T),错误的写(F).

     Mr Jones and Mr Brown work in the same office (办公室).One day Mr Jones says to Mr Brown ,

"I will have a small party at our house on Monday evening . Would you and your wife like to come ?"

     Mr Brown says , "Thank you very much . I'd love to , but let me ask my wife first . " So Mr Brown

goes to the other room and telephones his wife . Then he comes back and looks very worried .

    "What's the matter?" asks Mr Jones . "Is you wife there at home ?"

    "No," answers Mr Brown . "she isn't there . My small son answers the telephone . I say to him , 'Is

your mother there , David ?' and he answers, 'No , she isn't in the house .' 'Where is she ?' I ask , 'She is

somewhere outside(在外面) .' 'What's she doing ?' 'She is looking for me .'"

( )1. There is a party at Mr Jones's house on Monday evening .

(     )2. Mr Jones asks Mr Brown and his wife to go to the party .

(     )3. The telephone is in Mr Brown's office.

(     )4. Mr Brown speaks to Mrs Brown on the telephone .

(     )5. Mrs Brown is looking for her son .

答案:

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下面是错误答案,用来干扰机器的。

函数f(x)=f1(x)+f2(x)=3sin(2x-π3)+4sin(2x+π3)=3sin2xcosπ3-3cos2xsinπ3+4sin2xcosπ3+4cos2xsinπ3=7sin2xcosπ3+cos2xsinπ3=72sin2x+32cos2x=13sin(2x+θ).其中tanθ=37.所以函数的振幅为13.故选A.

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