The most obvious type of water pollution is .

A、religious

B、Buddhist

C、Yoga

D、Transcendental

A、partly

B、properly

C、specially

D、especially

The coast of the State of Maine is oneof the most irregular in the world. A straight line running from thesouthernmost coastal city to the northernmost coastal city would measure about225 miles. If you followed the coastline between these points, you would travelmore than ten times as far. This irregularity is the result of what is called adrowned coastline.

______(46)At that time, the whole areathat is now Maine was part of a mountain range that towered above the sea. Asthe glacier (冰川) descended, however, itexpended enormous force on those mountains, and they sank into the sea.

As the mountains sank, ocean watercharged over the lowest parts of the remaining land, forming a series oftwisting inlets and lagoons (咸水湖)- The highestparts of the former mountain range, nearest the shore, remained asislands.______(47)Marine fossils found here were 225 feet above sea level,indicating the level of the shoreline prior to the glacier.

The 2,500-mile-long rocky coastline ofMarine keeps watch over nearly two thousand islands. Many of these islands aretiny and uninhabited, but many are home to thriving communities. Mt. DesertIsland is one of the largest, most beautiful of the Maine coast islands.Measuring 16 miles by 12 miles, Mt. Desert was essentially formed as twodistinct islands. ______(48)For years, Mt. Desert island, particularly itsmajor settlement, Bar Harbor, afforded summer home for the wealthy. Recentlythough, Bar Harbor has become a rapidly growing arts community as well. But,the best part of the island is the unspoiled forest land known as AcadiaNational Park. Because the island sits on the boundary line between thetemperate (温带) and sub-Arctic zones,the islands supports the plants and animals of both zones as well as beach,inland, and alpine (高山的) plants.______(49)Theestablishment of Acadia National Park in 1916 means that this natural reservewill be perpetually available to all people, not just the wealthy. Visitors toAcadia may receive nature instruction from the park naturalists as well asenjoy camping, cycling, and boating. Or they may choose to spend time at thearcheological museum, learning about the Stone Age inhabitants of the island.

The best view on Mt. Desert Island isfrom the top of Cadillac Mountain.

______(50)From the summit, you cangaze back toward the mainland or out over the Atlantic Ocean and contemplatethe beauty created by a retreating glacier.

(46)

A. It also lies in a major bird migration lane andis a resting spot for many birds.B. Mt. Desert island is one of the most famous ofall of the islands left behind by the glacier.C. The wealthy residents of Mt. Desert Islandselfishly keep it to themselves.D. The term comes from the activity of the ice age.E. This mountain rises 1,532 feet, it is thehighest mountain on the Atlantic seashore.F. It is split almost in half by Sones Sond, adeep and narrow stretch of water seven miles long.

(47)

A. It also lies in a major bird migration lane andis a resting spot for many birds.B. Mt. Desert island is one of the most famous ofall of the islands left behind by the glacier.C. The wealthy residents of Mt. Desert Islandselfishly keep it to themselves.D. The term comes from the activity of the ice age.E. This mountain rises 1,532 feet, it is thehighest mountain on the Atlantic seashore.F. It is split almost in half by Sones Sond, adeep and narrow stretch of water seven miles long.

(48)

A. It also lies in a major bird migration lane andis a resting spot for many birds.B. Mt. Desert island is one of the most famous ofall of the islands left behind by the glacier.C. The wealthy residents of Mt. Desert Islandselfishly keep it to themselves.D. The term comes from the activity of the ice age.E. This mountain rises 1,532 feet, it is thehighest mountain on the Atlantic seashore.F. It is split almost in half by Sones Sond, adeep and narrow stretch of water seven miles long.

(49)

A. It also lies in a major bird migration lane andis a resting spot for many birds.B. Mt. Desert island is one of the most famous ofall of the islands left behind by the glacier.C. The wealthy residents of Mt. Desert Islandselfishly keep it to themselves.D. The term comes from the activity of the ice age.E. This mountain rises 1,532 feet, it is thehighest mountain on the Atlantic seashore.F. It is split almost in half by Sones Sond, adeep and narrow stretch of water seven miles long.

(50)

A. It also lies in a major bird migration lane andis a resting spot for many birds.B. Mt. Desert island is one of the most famous ofall of the islands left behind by the glacier.C. The wealthy residents of Mt. Desert Islandselfishly keep it to themselves.D. The term comes from the activity of the ice age.E. This mountain rises 1,532 feet, it is thehighest mountain on the Atlantic seashore.F. It is split almost in half by Sones Sond, adeep and narrow stretch of water seven miles long.