Multitasking is easiest when at least one of the tasks is habitual, or requires little thought. Most people don’t find it difficult to eat and read the newspaper at the same time. However, when two or more attention­requiring tasks are attempted at one time, people sometimes make mistakes.

　　We often don’t remember things as well when we’re trying to manage several details at the same time. Without mental focus, we may not pay enough attention to new information coming in, so it never makes it into our memory stores. That is one of the main reasons we forget people’s names—even sometimes right after they have introduced themselves. Multitasking can also affect our relationships. If someone checks their e­mail while on the phone with a friend, they may come off as absent­minded or disinterested. It can also cause that person to miss or overlook key information being passed on to them.(2010·浙江卷)

　　1．Why are some mental aerobic exercises designed to engage people in multitasking?

　　A．To make them more productive.

　　B．To reduce their stress and anxiety.

　　C．To develop their communication skills.

　　D．To help them perform daily tasks more easily.

　　解析：事实细节题。第一段说，“执行多项任务”成为一种生活方式，甚至被看做成功的关键，但是很多时候，这样的行为使我们降低而不是提高效率。由此判断，大脑训练的初衷是为了让我们提高工作效率，因此选A，其他选项的叙述不符合文章内容。

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