Question

   There is a fish called the angelfish (神仙魚), which can change from female to male. No,it cannot do it by simply wishing to I become male. The change happens for a specific reason.

   The angelfish live in groups. And each group has one male fish,which is blue in color,and four female fish,which are yellow in color.

   The male angelfish is the strongest and largest member of the group. When the male dies,the largest female fish in the group begins to change its looks. She begins to grow larger in size. After a week,she starts changing colors,from yellow to blue. Slowly,she begins looking like a male. Two weeks later,black stripes (條紋) appear on her body. She is now really male.

   The angelfish are among the most brightly colored fish of the sea. People prefer to keep them because of the interesting patterns (圖案) on them. People like to keep them because of their good look. Often,the young ones are different in color from the old ones. At night their colors may change.

閱讀短文，回答下列問題。

1. How many angelfish are there in a group?

2. What color are the female angelfish?

3. What do the angelfish first change when they change from female to male?

4. How long does it take the angelfish to change from female to male?

5. Why do people like to keep the anglefish at home?

Answer 1

  本文主要介紹了一種神奇的魚——神仙魚，它們可以 雌性變成雄性，它們的這種變換，不是意愿所決定的，是由生 存環境的變化來決定的。

1. Five.由第二段第二句可知，一個神仙魚的小群體是由 一個雄魚和四個雌魚組成的。

2. They are yellow.由第二段第二句“••• and four female fish,which are yellow in color. ”可知，雌性魚的顏色是黃色的。

3. Their size.由第三段第三句“She begins to grow larger in size. ”可知神仙魚從雌性變成雄性先變體型。

4. More than two weeks.由第三段倒數第一、二句可知由 雌性變為雄性需要兩周多。

5. Because they look nice.由第四段第二句“People like to keep them because of their good look. ”可知，人們在家詞養神仙魚是因為它們外觀漂亮。