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3. Attracting women into science will require a change in the culture that assumes girls are less__than boys of doing science and entering the profession.

A. suitable     B. superior

C. capable     D. qualified

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2. If a person does not receive the gene for right-handedness he may become right-or left- handedness ___________ chance and the person’s surroundings.

A. because of    B. according to

C. due to      D. related to

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1. When giving evidence in a law court, people are expected to tell the ________ truth.

A. maximum     B. perfect

C. positive      D. absolute

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30、如图,内部任一点,求证:

(1)

(2)

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29、如图,点的内心,的内心,的内心,若的度数是整数,求至少是多少度?

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28、如图,在中,上,,在上截取,求的度数。

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27、△ABC中,∠A=Rt∠,∠B=60∠B的平分线交AC于D,点D到边BC的距离为2cm,则边AC的长是__cm

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26、如图△ADE中,∠ADE=140且AB=BC=CD=DE,则∠A=__

第27题
 
 

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25、如图,直线表示三条相互交叉的公路,现要建一个货物中转站,要求它到三条公路的距离相等,则可供选择的地址有(  )

A.1处   B.2处   C.3处    D.4处

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