______ lost their prominence when large ships could not be accomodated.

A．For protection against other dogs.
B．For protection against other animals.
C．Just for fun.
D．For the purpose of guarding the house.

A．Jason Green is an educational psychologist.
B．Jason Green is completely against the exam system.
C．Exams are far from being the most suitable way to assess whether learning has taken place.
D．It is not proper to use exams as the only testing device (测试方法) to assess (评估) people’s ability.