2．The World Meat Free Day for 2017falls on 12，June，but what would actually happen if the whole world suddenly went vegetarian （素食的） permanently？
If vegetarianism were accepted by everyone by 2050，the world would have about seven million fewer deaths every year．No meat would lower the chances of some diseases or even some cancers and so save the world 2-3% global GDP in medical bills．Food-related emissions would drop by around 60%．This would be due to getting rid of red meat which come from methane （甲烷） producing livestock （家畜）-from people's diets．Turning former pastures （牧場） into native habitats and forests would slow climate change and bring back lost biodiversity，including some animals which were previously pushed out or killed in order to keep cattle．
However，farmers in the developing world could really suffer．Arid and semi-arid lands can only be used to raise animals as there's no or little water in these places，such as the Sahel land strip in Africa next to the Sahara； nomadic（游牧的） groups that keep livestock there would be forced to settle permanently and lose their cultural identities if there were no more meat．Losing meat also means that we also lose traditions．There's no more Christmas turkey．We would need to replace meat with nutritional substitutes，in particular for the world's estimated two billion-plus unhealthy or weak people for lack of nutrients．Animal products contain more nutrients per calorie than staples like grains and rice．
Everybody currently engaged in the livestock industry would need to be retrained for a new career．This could be in agriculture，reforestation or producing bioenergy．Failing to provide career alternatives could lead to mass unemployment and social problems，particularly in traditionally rural communities．
29．The passage is mainly aboutC．
A．what future life will be like
B．why there is a World Meat Free Day
C．the influence of a meat free world
D．the positive and negative sides of our life
30．In what way would people suffer from a vegetarian world？B
A．Famers'lands would become too dry to raise livestock．
B．We would lose some traditions where meat is needed．
C．All of us would be unhealthy and weak for lack of nutrients．
D．Nomadic groups would keep their livestock where they settle．
31．The underlined word"arid"in Paragraph 3 means"A"．
A．dry B．wet C．hot D．cold．
分析 2017年六月12日是世界無肉日，寫了素食主義對于世界的影響．
解答 29．C 主旨大意題．根據(jù)第一段句子what would actually happen if the whole world suddenly went vegetarian （素食的） permanently？但是如果整個世界突然變成素食主義者，會發(fā)生什么呢？由此可以看出本文主要寫素食對世界的影響，所以答案選C．
30．B 細節(jié)理解題．根據(jù)句子Losing meat also means that we also lose traditions．失去肉也意味著我們失去了傳統(tǒng)，所以答案選B．
31．A 猜測詞義題．根據(jù)根據(jù)后文semi-arid lands can only be used to raise animals as there's no or little water in these places半干旱的土地只能用來飼養(yǎng)動物，因為這些地方?jīng)]有或很少有水．所以此處arid是一種沒有水甚至很少水的地方，所以猜測arid是干旱的意思，dry"干旱的"，所以答案選A．
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