听一段材料，回答下面几个小题。According to the passage,what were dogs trained for in the past?
A.For protection against other animals.
B.For protection against other dogs.
C.Just for fun.Why were dogs used for hunting?
A.Because they did not eat other animals.
B.Because they were useful for protection.
C.Because they always obeyed their masters.What is the most important reason for people in the city to keep dogs now?
A.For companionship.
B.For amusement.
C.For protection against robbery.
听一段材料，回答下面几个小题。What will the two speakers most probably do tomorrow?
A.Go shopping together.
B.Stay home and have a rest.
C.Have a picnic.Why does the man urge the woman to open the door quickly?
A.Because someone indoors is anxious to see him soon.
B.Because the packages he’s holding are extraordinarily heavy.
C.Because they’ll get the air tickets to catch the plane.Where is the key to the door in actual fact?
A.In the woman’s purse.
B.On the table in the kitchen.
C.In the man’s pocket.
What is the relationship between the speakers?
A.Teacher and student.
B.Doctor and patient.
C.Waitress and customer.
What is the relationship between the speakers?
A.Salesman and customer.
B.Husband and wife.
C.Doctor and patient.
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