儿童不肯吃药，父母就告诉他，一吃完药，就可以得到一颗他喜爱的巧克力糖，结果儿童以后主
题型：单项选择题 A1型题
问题：
儿童不肯吃药，父母就告诉他，一吃完药，就可以得到一颗他喜爱的巧克力糖，结果儿童以后主动吃药的行为增加了，父母也每次都给了他巧克力糖。最能说明此行为训练技术原理的是（）
A.连续强化
B.部分强化
C.负强化
D.差别强化
E.塑造
题型：单项选择题 A1型题
The United Nations says forty million people or so around the world went hungry in 2008, mainly because of higher food prices. Early estimates from the UN Food and Agriculture Organization (FAO) show that 963 million people did not get enough to eat.
World food prices have dropped since early 2008. Prices of major crops have decreased by more than half from their height earlier last year. But they remain high compared to earlier years.
But FAO official Hafez Ghanem says lower prices have failed to end the food crisis (危机) in many poor countries. “For millions in developing countries,” he says, “getting enough food every day to live an active and healthy life is a distant dream. ”
The FAO says food shortage is a threat to people's health. Today, two-thirds of the world's undernourished people live in just a few countries. These are India, the Democratic Republic of Congo, Bangladesh, Indonesia, Pakistan, Ethiopia and so on.
A report on food insecurity warns that the current economic crisis could send even more people into hunger and poverty.
In sub-Saharan Africa, the percentage of the people who continually go hungry fell from 34% in 1997 to 30% in 2008. But the FAO says Ghana is the only country that has reached two sets of hunger reduction targets. These were set by the 1996 World Food Summit and the Millennium Development Goals. The main reason is the growth in agricultural production in Ghana.
The FAO says some countries in Southeast Asia like Thailand and Vietnam have made progress in hunger reduction goals. But South Asia and Central Asia haven't, and North Korea is still in hot water.
小题1:What FAO official Hafez Ghanem says implies（暗示）__________
A．it's easy but takes long to provide people with enough food
B．enough food can make people more active and healthier
C．there is difficulty solving the food shortage in a short time
D．people in developing countries will never get enough food小题2:The underlined word "undernourished" in Para. 4 probably means ________.
A．hungry and unhappy
B．unhealthy for lack of food
C．not fat because of poverty
D．undeveloped and poor小题3:What is the best title of this passage?
A．The food production of the world
B．The hunger reduction target of the FAO
C．The food shortage around the world
D．The solution to the global food shortage