the chair is very comfortable to sit on该句中的不定式与主语有动宾关系，因此必须是及物动词，不及物动词则该加上适当的介词。

Sea turtles are found in all warm waters throughout the world. Sea turtles are the___36____ of the turtles. The largest kind of sea turtle can grow as long as eight feet and ___37___ 1,500 pounds. Even the smallest kind, Kemp’s-Ridley, can ___38___ to 28 inches long and weigh almost 100 pounds. Many other turtles are small enough to___39___ in your hand. It is difficult to find population numbers for sea turtles because they do not___40____ shore once they hatch and reach the ocean, which makes it hard to ___41___ them. Sea turtles___42___ in the water because they are safer there. They cannot___43___ their heads and feet into their shells like other turtles can. Sea turtles cannot hide inside their shells __44___ other animals that want to eat them. They need to move quickly to stay safe.

When the weather ___45___ warm, sea turtles leave the ocean to___46___ their eggs on the beach. This is the only time they will ever leave the water. Most___47____ turtles spend part of the time in water___48___ part of the time on land. It is easy to understand___49____ sea turtles stay in the water. Their___50___ to swim is greater than their ability to walk. Their heavy bodies and unusual feet make it hard for them to ___51___ on land. They are better___52___ for life in the water. They are well suited for life in the sea because of__53___ their bodies are made.

The way their feet are made helps sea turtles swim very quickly. Their feet look like long __54___. When they swim, they flap their feet like a bird flaps its wings. This ___55___ way of swimming benefits sea turtles. It allows them to escape from their enemies.

36.　 A.　 dwarfs　　　　　　　 B.　 giants　　　　　　　　 C.　　　 mammals 　　　　　 D.　 ancestors

37.　 A.　 measure　　　　　　 B.　 weigh　　　　　　　　 C.　　　 sell 　　　　　　　　　 D.　 sound

38.　 A.　 grow up　　　　　　 B.　 bring up　　　　　　　 C.　　　 take up　　　　　　　　 D.　 go up

39.　 A.　 suit　　　　　　　　　　 B.　 fit 　　　　　　　　　 C.　　　 match　　　　　　　　　 D.　 seize

40.　 A.　 go to　　　　　　　　　 B.　 turn to　　　　　　　　 C.　　　 back to　　　　　　　　 D.　 return to

41.　 A.　 keep up with　　　 B.　 keep track of　　　 C.　　　 keep in touch with D.　 keep to

42.　 A.　 swim　　　　　　　　 B.　 hide　　　　　　　　　　 C.　　　 sleep　　　　　　　　　　 D.　 stay

43.　 A.　 push 　　　　　　　 B.　 draw 　　　　　　　 C.　　　 drag　　　　　　　　　　 D.　 pull

44.　 A.　 away　　　　　　　　 B.　 from　　　　　　　　　 C.　　　 for　　　　　　　　　　　 D.　 to

45.　 A.　 becomes　　　　　　 B.　 turns　　　　　　　　　 C.　　　 changes　　　　　　　　 D.　 leads

46.　 A.　 lay　　　　　　　　　　 B.　 lie　　　　　　　　　　　 C.　　　 laid　　　　　　　　　　　 D.　 lain

47.　 A.　 the other　　　　　　 B.　 another 　　　　　 C.　　　 other　　　　　　　　　　 D.　 others’

48.　 A.　 but　　　　　　　　　　 B.　 and　　　　　　　　　　 C.　　　 or　　　　　　　　　　　　 D.　 so

49.　 A.　 when　　　　　　　　 B.　 where　 　　　　　 C.　　　 why 　　　　　　　　　 D.　 as

50.　 A.　 technique　 　　　 B.　 talent　　　　　　　　　 C.　　　 ability 　　　　　　　　 D.　 opportunity

51.　 A.　 walk　　　　　　　　　 B.　 travel　　　　　　　　　 C.　　　 wander　　　　　　　　 D.　 play

52.　 A.　 adopted　　　　　　　 B.　 adapted　　　　　　　 C.　　　 adequate 　　　　　　 D.　 admitted

53.　 A.　 the way　　　　　　　 B.　 the manner　　　　　 C.　　　 the method 　　　　 D.　 the shape

54.　 A.　 paddles 　　　　　 B.　 sticks　　　　　　　　 C.　　　 wings　　　　　　　　　 D.　 tails

55.　 A.　 abnormal　　　　　　 B.　 unusual　　　　　　　 C.　　　 ordinary　　　　　　　　 D.　 unbelievable

Sea turtles are found in all warm waters throughout the world. Sea turtles are the___36____ of the turtles. The largest kind of sea turtle can grow as long as eight feet and ___37___ 1,500 pounds. Even the smallest kind, Kemp’s-Ridley, can ___38___ to 28 inches long and weigh almost 100 pounds. Many other turtles are small enough to___39___ in your hand. It is difficult to find population numbers for sea turtles because they do not___40____ shore once they hatch and reach the ocean, which makes it hard to ___41___ them. Sea turtles___42___ in the water because they are safer there. They cannot___43___ their heads and feet into their shells like other turtles can. Sea turtles cannot hide inside their shells __44___ other animals that want to eat them. They need to move quickly to stay safe.

When the weather ___45___ warm, sea turtles leave the ocean to___46___ their eggs on the beach. This is the only time they will ever leave the water. Most___47____ turtles spend part of the time in water___48___ part of the time on land. It is easy to understand___49____ sea turtles stay in the water. Their___50___ to swim is greater than their ability to walk. Their heavy bodies and unusual feet make it hard for them to ___51___ on land. They are better___52___ for life in the water. They are well suited for life in the sea because of__53___ their bodies are made.

The way their feet are made helps sea turtles swim very quickly. Their feet look like long __54___. When they swim, they flap their feet like a bird flaps its wings. This ___55___ way of swimming benefits sea turtles. It allows them to escape from their enemies.

36.　 A.　 dwarfs　　　　　　　 B.　 giants　　　　　　　　 C.　　　 mammals D.　 ancestors

37.　 A.　 measure　　　　　　 B.　 weigh　　　　　　　　 C.　　　 sell D.　 sound

38.　 A.　 grow up　　　　　　 B.　 bring up　　　　　　　 C.　　　 take up D.　 go up

39.　 A.　 suit　　　　　　　　　　 B.　 fit 　　　　　　　　　 C.　　　 match D.　 seize

40.　 A.　 go to　　　　　　　　　 B.　 turn to　　　　　　　　 C.　　　 back to D.　 return to

41.　 A.　 keep up with B.　 keep track of C.　　　 keep in touch with D.　 keep to

42.　 A.　 swim B.　 hide　　　　　　　　　　 C.　　　 sleep D.　 stay

43.　 A.　 push B.　 draw 　　　　　　　 C.　　　 drag D.　 pull

44.　 A.　 away　　　　　　　　 B.　 from　　　　　　　　　 C.　　　 for D.　 to

45.　 A.　 becomes　　　　　　 B.　 turns　　　　　　　　　 C.　　　 changes D.　 leads

46.　 A.　 lay B.　 lie　　　　　　　　　　　 C.　　　 laid D.　 lain

47.　 A.　 the other　　　　　　 B.　 another 　　　　　 C.　　　 other D.　 others’

48.　 A.　 but　　　　　　　　　　 B.　 and　　　　　　　　　　 C.　　　 or D.　 so

49.　 A.　 when　　　　　　　　 B.　 where　 　　　　　 C.　　　 why D.　 as

50.　 A.　 technique　 　　　 B.　 talent　　　　　　　　　 C.　　　 ability D.　 opportunity

51.　 A.　 walk　　　　　　　　　 B.　 travel　　　　　　　　　 C.　　　 wander D.　 play

52.　 A.　 adopted　　　　　　　 B.　 adapted　　　　　　　 C.　　　 adequate D.　 admitted

53.　 A.　 the way B.　 the manner C.　　　 the method 　　　　 D.　 the shape

54.　 A.　 paddles B.　 sticks　　　　　　　　 C.　　　 wings D.　 tails

55.　 A.　 abnormal B.　 unusual C. ordinary D.　 unbelievable