46. Which of the following statements is NOT true according to the passage?

A. The weather had no connection(连系)with the accident.

B. The captain believed in supernatural things, such as ghost.

C. Bunter and the captain were friendly relations.

D. The man at the wheel did not actually see anything strange or supernatural.

D

There are warm tropical regions(热带地区) all over the globe, but only the Indians of the South American rain forests have formed the habit of sleeping in the open air. Long before they made painful acquaintance(相识) with Europeans, they invented something that was unique(独特) on earth: The hammock.

Nobody really knows who first had the bright idea of making sleeping in the air the symbol of untroubled rest. The Indians see the hammock as a “Gift”(礼物) of heaven(上天)，something given to them a very long time ago.

In it the Indians pass away hot noon hours, napping or chatting. Swinging it to and fro(来回摆动) creates a cooling breath of air and keeps away insects(昆虫). They work and play in hammocks, are born and die there.

Hung like a suspension(悬浮) bridge between heaven and earth, a hammock is dry while the soil is wet and it is safe from most wild animals.

Hammocks have the advantage(优点) over beds in that they are easy to transport and take up very little space when they have been rolled up(卷起). Indians never go on a journey without their hammocks, not even to their plantations.

47. The word hammock in this passage means .

A. a suspension cage which can be swung to and fro in the air.

B. a seat hanging by two ropes from the branch of a tree.

C. a suspension bridge in the South American rain forests.

D. a net hung between two supports and used as a bed.

48. When was the hammock invented and by whom?

A. The Indians had invented the hammock long before they came to South America.

B. The Indians had invented the hammock long before the Europeans came to South America.

C. The Europeans invented the hammock after they made acquaintance with the Indians.

D. The Europeans had invented the hammock before they went to South America

49. Indians swing the hammock to .

A. pray(祈求) to heaven for a gift

B. keep away flies, mosquitoes and other insects

C. keep away wild animals

D. fall asleep quickly

50. Acording to the passage, hammock .

A. cannot be rolled up

B. are difficult to transport

C. are never brought to the plantations

D. can be kept dry while the ground is wet

E

Without proper planning, tourism(旅游业) can cause problems. For example, too many tourists can crowd public places that are also enjoyed by the inhabitants(居民) of a country. If tourists create too much traffic, the inhabitants become annoyed(使烦恼) and unhappy. They begin to dislike tourists and to treat them impolitely. they forget how much tourism can help. the country's economy(经济). It is important to think about the people of a destination(目的地) country and beauty that attract(吸引) tourists. Tourism should also advance the well-being (health and happiness) of local inhabitants.