Section 4
关于一个原始tribe的考古研究
31-40 Completion:
31. The tribe was 10,000 years ago
32. had been flooded
33. pictures observed from temple wall by one research
34. 对bones of women的研究
35. study of female corpse teeth, fingers, and bones
36. enlarged: big toes
37. remains of homes
38. 研究出那时候teeth不好的原因是grain中有small stones
39. They put mills / grain on the ground
40. Why they don’t have teeth decay, because their food don't contain bacteria.
Section 4
海龟研究
31-40 Completion:
31. The advantageous shape of turtle help them move undersea.
32. Shell is soft and is not boney shells.
33. way of feeding: sleep on the water for several hours
34. by adjusting burning calories and food high in protein
35. migration is the Atlantic ocean
36. when the turtle reaches surface
37. can not only monitor the location but also the depth
38. no damage nor crack in her shell
39. for avoiding running out power
40. economical in energy
Section 4
利用太阳能进行水净化
31-40 Completion:
31. 一些地下水，海水因为有太多的salts所以不能使用
32. SW40可以用在hospitals
33. 虽然这个SW40比较好用，但是它purify water too slow
34. 这个设备的推广使用得到了哪个组织的协助Health International
35. SW40 can output 9 litres water in a sunny day.
36. A SW40 can support the water use of a family
(一个流程图，题目中间没有停顿)
37. clip made of glass.
38. SW40 和水平面的夹角是12.5
39. UV 射线 can destroy germs
40. 一个管子滴水到一个圆心的桶里，这个桶叫什么？water tanks
Section 4
动物的视觉嗅觉介绍
31-40 Completion:
31. animals use odor to feel each other
32. carbon dioxide can also be used to find food
33. female butterflies
34. feet to feel the enemy
35. the stomach of animal sometimes will emit alarm pheromone, to alarm the enemy
36. the queen keeps control of the territory
37. snake can use the heat to feel the rat
38. height
39. snakes observe the body shape of the mouse
40. snakes can also identify the distance of the mouse
Section 4
介绍垂直农业以及人们的反对意见
31-40 Completion:
31. people learned to build shelter and irrigation
32. planting crops and transportation crops need oil
33. advantage: increased food availability
34. proper temperature is also must
35. disadvantage: losses of wildlife habitat
36. loss of nutrition in the soil degradation
37. declined in disease
38. great erosion was caused by floods
39. solar energy is unreliable
40. plants need certain humidity
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