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问题：在△ABC中，AB=AC，∠A=100°，BD为∠B 的平分线，探究AD、BD、BC之间的数量关系. 请你完成下列探究过程： （1）观察图形，猜想AD、BD、BC之间的数量关系为 . （2）在对（1）中的猜想进行证明时，当推出∠ABC=∠C=40°后，可进一步推出∠ABD=∠DBC= 度. （3）为了使同学们顺利地解答本题（1）中的猜想，小提供了一种探究的思路：在BC上截取BE=BD，连接DE,在此基础上继续推理可使问题得到解决.你可以参考小强的思路，画出图形，在此基础上对（1）中的猜想加以证明.也可以选用其它的方法证明你的猜想.
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【单选题】documnets against acceptance
A.
mostly adopted modes of payment
B.
ways of collection
C.
ways of remittance
D.
parties involved in payment in international trade
【多选题】关于洛克的观点,以下说法正确的是()。
A.
妇女应具有一些基本的人格尊严与权力
B.
妻子是丈夫的私有财产
C.
他没有主张在家庭环境中丈夫与妻子的权利平等
D.
他主张的自由主义是在公共范围之内的
【单选题】Coffee and tea are substitutes. Bad weather that sharply reduces the coffee bean harvest would
A.
increase consumer surplus in the market for coffee and decrease producer surplus in the market for tea.
B.
increase consumer surplus in the market for coffee and increase producer surplus in the market for tea.
C.
decrease consumer surplus in the market for coffee and increase producer surplus in the market for tea.
D.
decrease consumer surplus in the market for coffee and decrease producer surplus in the market for tea.
【单选题】Assuming that coffee and tea are substitutes, a decrease in the price of coffee will result in
A.
A leftward shift in the demand for tea.
B.
A downward movement along the demand curve for tea.
C.
A rightward shift in the demand for tea.
D.
An upward movement along the demand curve for tea.
【单选题】documnets against payment
A.
mostly adopted modes of payment
B.
ways of collection
C.
ways of remittance
D.
parties involved in payment in international trade
【单选题】If tea and coffee are substitutes, the cross elasticity of coffee with respect to the price of tea will be ( ) and an increase in the price of tea will ( ) the demand for coffee.
A.
positive; increase
B.
negative; decrease
C.
negative; increase
D.
positive; decrease
【单选题】In the , coffee, tea and continental breakfast are provided.
A.
kitchenette
B.
lounge area
【简答题】There______some tea in the coffee.
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