在考生文件夹中，存有文档WT1.DOC，其内容如下：[文档开始] 本专业培养目标是计算机专业的技术应用型人才，他们应该掌握计算机软件、硬件及系统的基本理论、基本方法和基本技能，能够从事计算机及相关领域应用技术工作、软、硬件维护、和一般应用系统的开发及设计，他们应该具有专业化计算机人的素质，是全面发展的社会主义建设人才。[文档结束] 按要求完成下列操作： (1)请将Word 文档WT1.DOC 设成楷体、小三号字并加粗、斜体。 (2)设置A4(210mm×297mm)纸张大小，左右边距设置为2.5厘米，页眉2.2厘米，其余页面设置的参数不必修改。保存文件为WD1.DOC。

A person’s intake of refined sugar and of foods that break down into sugars during digestion is the dietary source of virtually all of the glucose (a type of sugar) that reaches that person’s bloodstream. Coffee, however, which itself does not break down into sugars during digestion, sometimes causes a person’s blood-glucose level to rise dramatically, even if the coffee is consumed without cream or any sweeteners.
Which of the following, if true, best helps to explain coffee’s effect on blood-glucose levels as it is described above ？（）

A．People often drink coffee after a meal consisting of several types of foods that themselves rapidly break down into sugars during digestion.

B．Drinking more than two cups of coffee in an hour increases a person’s level of stress, and the body reacts to stress by releasing stored glucose into the blood.

C．People who eat very few foods that contain refined sugar often have higher blood-glucose levels than people who eat many such foods.

D．For many people, the consumption of one piece of chocolate cake has the same stimulating effect as one cup of plain coffee.

E．People with sedentary office jobs are more likely to drink large amounts of coffee and to have higher blood-glucose levels than are people with jobs requiring constant physical activity.