16.B 联系上下文，laura跟男子说话是为了买狗
17.A
参考这句话You just wait a minute. I take good care of that dog. The guy I got him from said he was a trained guard dog. Trouble is the stupid thing doesn't even bark when strangers come around.
18.B
最后一段第一行Laura shook her head. "I'll be back with the money." Breakfast forgotten
由forgotten这个词可知，laura原来是出来吃早餐的。
19.B
这道题难度在b,c的选择上
laura取钱时很犹豫，进行了思想挣扎
I can't afford this, she thought as she punched the numbers into the machine.The dog will need a vet and where am I going to get the money for that?由这句话知道laura是很穷，负担不起狗狗的费用的
C说她是动物保护主义者，有点夸大，更多是善良，同情，爱狗之心吧，而动物保护主义者往往比较极端，主张让动物自由自在生活，不会把动物当宠物养
20.A
看最后一段就知道了
回答这个偶都误了吃饭了，楼主慢慢看吧。
