74. It can be inferred from the text that ________.
(A). we can get enough resources without rainforests
(B). there is great medicine potential in rainforests
(C). we will grow fewer kinds of crops in the gained land
(D). the level of annual rainfall affects wind patterns

70. If you would like to have some vegetable beef, what may be your choice? (A). French Slam® (B). Chicken-Fried Steak® (C). The Super Bird® (D). Sandwich with Salad or Soup®

71. The chart shows that from 2005 to 2008, ________. (A). the percentage of the Spanish families with a computer rose 35 points (B). the percentage of the White families with a computer remained unchanged (C). the number of the Black families with a computer was on the decrease (D). the number of the Asian families with a computer showed the sharpest increase

72. A rainforest is an area covered by tall trees with thetotal high rainfall spreading quite equally through theyear and the temperature rarely dipping below l6℃.Rainforests have a great effect on the worldenvironment because they can take in heat from thesun and adjust the climate. Without the forestcover，these areas would reflect more heat into theatmosphere，warming the rest of the world. Losingthe rainforests may also influence wind and rainfallpatterns，potentially causing certain naturaldisasters all over the world. In the past hundred years，humans have begun destroying rainforests in search of three majorresources(资源)：land for crops，wood for paper and other products，land for raising farmanimals. This action affects the environment as a whole. For example，a lot of carbon dioxide(二氧化碳)in the air comes from burning the rainforests. People obviously have a need for theresources we gain from cutting trees but we will suffer much more than we will benefit. There are two main reasons for this. Firstly，when people cut down trees，generally they canonly use the land for a year or two. Secondly，cutting large sections of rainforests may providea good supply of wood right now，but in the long run it actually reduces the world’s woodsupply. Rainforests are often called the world’s drug store. More than 25％ of the medicines we usetoday come from plants in rainforests. However，fewer than l％of rainforest plants have beenexamined for their medical value. It is extremely likely that our best chance to cure diseases liessomewhere in the world’s shrinking rainforests. Rainforests can help to adjust the climate because they ________. (A). reflect more heat into the atmosphere (B). bring about high rainfall throughout the world (C). rarely cause the temperature to drop lower than l6℃ (D). reduce the effect of heat from the sun on the earth

73. What does the word “this” underlined in the third paragraph refer to? (A). We will lose much more than we can gain. (B). Humans have begun destroying rainforests. (C). People have a strong desire for resources. (D). Much carbon dioxide comes from burning rainforests.

75. What might be the best title for the text? (A). How to Save Rainforests (B). How to Protect Nature (C). Rainforests and the Environment (D). Rainforests and Medical Development

56. according to the text, what kind of children may eat more unhealthy food? (A). Those who often take exercise. (B). Those who often watch television. (C). Those who often have meals at home. (D). Those who often walk to school.

57. The author thinks that children are becoming overweight because (A). their parents often cook meals for them (B). they are too busy to go out and play (C). they can’ t choose what to eat (D). there are too many fast food shops around

58. The word "steering" underlined in the last sentence most probably means _______. (A). forcing (B). guiding (C). driving (D). moving

59. The main purpose of the text is to _________. (A). tell a story (B). provide facts (C). give advice (D). compare opinions

60.You can most probably read the text in ________. (A). a newspaper (B). a travel guide (C). a textbook (D). a telephone book