[简答题] The hunter-gatherer tribes that today live as our prehistoric human (1) __________ ancestors consume primarily a vegetable diet supplementing with animal (2) __________ foods. An analysis of 58 societies of modern hunter-gatherers, including the Kung of southern Africa, revealed that one-half emphasize gathering plant foods, one-third concentrate on fishing, and only one-sixth are primarily hunters. Overall, two-thirds and more of the hunter-gatherer’’s calories come　 (3) __________ from plants. Detailed studies of the Kung by the food scientists at the University of London, showed that gathering is a more productive source of food than is hunting. An hour of hunting yields in average about 100 edible (4) __________ calories, as an hour of gathering produces 240.　　　　　　　　 　　　 (5) __________ 　　Plant foods provide for 60 percent to 80 percent of the Kung diet, (6) __________ and no one goes hungry when the hunt fails, interestingly, if they esc

[简答题] The hunter-gatherer tribes that today live as our prehistoric human (1) __________ ancestors consume primarily a vegetable diet supplementing with animal (2) __________ foods. An analysis of 58 societies of modern hunter-gatherers, including the Kung of southern Africa, revealed that one-half emphasize gathering plant foods, one-third concentrate on fishing, and only one-sixth are primarily hunters. Overall, two-thirds and more of the hunter-gatherer’’s calories come　 (3) __________ from plants. Detailed studies of the Kung by the food scientists at the University of London, showed that gathering is a more productive source of food than is hunting. An hour of hunting yields in average about 100 edible (4) __________ calories, as an hour of gathering produces 240.　　　　　　　　 　　　 (5) __________ 　　Plant foods provide for 60 percent to 80 percent of the Kung diet, (6) __________ and no one goes hungry when the hunt fails, interestingly, if they esc

[填空题]Today, our English teacher asked us to write a ______ (compose).

[填空题]Today, our English teacher asked us to write a（）(compose).

[单项选择]Protecting the Few How we live our lives affects the environment. The environment is all the things around you. All across Earth, humans are 31 the environment in small and large ways. We cut down trees to build houses. We plow fields to 32 crops. We pour waste into rivers, lakes and oceans. We use larger nets and bigger boats to catch 33 numbers of fish. Activities like these affect plants and animals. They 34 affect things like the soil and water. Sometimes our actions make the number of a 35 plant or animal get larger. For example, if you planted roses in your yard, there would be more roses in your area. Our activities can also 36 to a smaller number of plants and animals. If a park were turned into an apartment building, what would happen to the plants and animals there Well, they would 37 die or move to other 38 . There would be fewer plants and animals. Pollution and other activities sometimes cause the num