单选题
A lot of boys and girls in America are wearing the
same clothes, and many of them have long hair, so it is often difficult to tell
whether they are boys or girls. One day an old man went for a
walk in a park in Washington, and when he was tired he sat down on a chair. A
young person was standing on the other side of the take.
"Excuse me," the old man said to the person next to him on the chair. "Do you
see that person with red trousers and long hair? Is it a girl or a
boy?" "A boy," said the neighbor, "he is my son."
"Oh," the old man said quickly. "I am sorry, but I did not know that you
were his mother." "I'm not." said the other person. "I am his
father."
单选题
Why is it difficult to tell whether those American boys and girls are
boys or girls?
A. Because they usually wear the same clothes and long hair.