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【简答题】

Skip that third helping of roast beef, save the planet and do your heart a favor at the same time.
That’s the advice of Alan our of the London School of Hygiene and Tropical Medicine and colleagues who (47) the livestock industry’s potential to help the UK reduce its carbon emissions to half of 1990 levels by 2030, and the knock-on effect on the nation’s health.
They found that the industry could reduce its emissions, but only if the livestock the UK produces, and the meat the nation (48) , drops by 30 per cent. Farms must also optimize(最优化) their energy (49) by, for example, capturing carbon in animal waste.
The health pay-off would be (50) : 18,000 fewer people would die prematurely in the UK each year from heart attceks--a(n) (51) of 17 per cent--as they would eat less of the fats found in meat.
The effect would not be limited to rich nations. The team found that Brazil could (52) the same health benefits. "We’re not saying go vegetarian, we’re saying reduce how much livestock produce you consume," says our. The savings could be (53) higher if reduced death rates from cancer and obesity had been included,he adds.
Agronomist(农艺学家) Kenneth Cassman of the University of Nebraska warns that cutting production in one region can (54) it elsewhere, causing a rise in global emissions. "Reducing production of livestock products in a developed country like the UK does little to influence global (55) in production and consumption where most of the increase in demand between now and 2050 will come from (56) countries," he says.
  • A) developing
  • B) even
  • C) trends
  • D) explored
  • E) developed
  • F) just
  • G) considerable
  • H) consumes
  • I) boast
  • J) achieve
    K) considerate L) offers M) reduction N) boost O) efficiency

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举一反三

【单选题】蜂巢的最优化包含多种理念,但不包含下列( )。

A.
正六边形
B.
密铺
C.
底盘菱形钝角 109°28″
D.
底盘菱形锐角 60°28″

【多选题】下列哪些属于PPP项目收益结构的优化?

A.
集成融资模式,分摊建设投资
B.
授权提供配套服务,拓展盈利链条
C.
开发副产品,增加收益来源
D.
冠明公共产品,增值社会资本声誉资本
E.
打包运作形成规模效应,降低单位产品成本

【单选题】下列关于数据库查询优化的叙述中,不正确的是( )。

A.
查询优化指的是从可能的查询策略中找出最有效的查询执行计划的一种处理过程
B.
查询优化包括逻辑查询计划选择和物理查询计划选择两个主要步骤
C.
两个关系代数表达式产生的结果关系只要具有相同的属性集,则这两个关系代数表达式就是等价的
D.
物理查询计划选择通常采用基于代价的查询计划选择方法

【单选题】西蒙等人提出:以“令人满意的”准则代替“最优化”准则,是因为()

A.
决策者是理性的
B.
决策者是有限理性的
C.
决策者能够获取决策所需的所有信息
D.
决策者能够准确预测全部方案的所有结果