题目内容：

Hi Danny,

Greetings from the Great Barrier Reef! I’m riding on a sailing boat with some relatives as I write this. We’re diving here all next week. The reef is located in the Coral Sea that is off the northeast coast of Australia.

The reef is made up of many corals. Corals are very hard and made of many tiny animals called “polyps” that look like underwater flowers. The corals need help to eat. They have a special relationship with other small animals, “algae” (藻类), that take in sunlight and make energy for the coral. It’s the algae that give color to the corals. Because algae need sunlight, the corals are very close to the surface of the water.

Together, the many corals create a magical environment. They make a home for the animals that live in the sea. When I went diving the other day, I saw all types of different animals-dolphins, turtles (海龟) and sea snakes. I was surprised at being able to see some fish I see only in movies, like clown fish (小丑鱼). As I am diving, I can feel the spirit of this magical place. It seems that these animals aren’t surprised to see me. Maybe they think I’m another fish!

Sadly, according to scientists, the Great Barrier Reef is dying because the water is getting warmer due to global warming. As the ocean gets warmer, the algae that live in the corals are cut off from the food they need for making energy. As a result, they leave the corals, and the corals die and lose their color. We see many dead white corals when we dive. We need to stop global warming and keep the water from getting hotter!

See you soon,

Gloria

1.Where is Gloria writing from?

A.A sailing boat. B.Great Barrier Reef.

C.A hotel room. D.A relative’s house.

2.What do algae do for corals?

A.They give sunlight to the corals.

B.They make energy for the corals to grow.

C.They capture fish for the corals to eat.

D.They allow the corals to move around.

3.Why is the coral reef described as “magical”?

A.The author had never been there before.

B.The area can allow the animals to do magical things.

C.It’s another world with many animals and colors.

D.Corals grow only at the Great Barrier Reef.

4.Why is the writer sad about the future of the corals?

A.She fears they will eventually die from global warming.

B.When corals die, they lose their color and turn to a boring white.

C.Not enough people will have a chance to see this magical place.

D.She’s sad that the corals and algae will break their relationship.