题目内容：

    Are cell phones making the human stupid? According to a new study out of Britain, the answer is “yes”. Cell phones are reducing the human power and we can see it from the numbers.

Professor Ian Robertson of Trinity College Dublin carried out the study. His research found that most people in Britain have to remember five passwords(密码), five pin numbers, two number plates, three security ID numbers, and three bank account numbers — quite a lot to just get through the daily life! To get around this, most people use only one or two passwords. Cell phones, laptops, and other memory machines offer a way to all the numbers and passwords that the common people have to remember. As a result, people don’t use their memories.

The study found that one quarter of all Britons couldn’t give their home phone numbers when asked. What’s more, only a third of those could remember more than three birthdays of their family members.

The study divided the numbers into age groups, providing some clear results. About one third under the age of 30 couldn’t remember their home phone numbers without using to a cell phone or other machines. In the same age group, only 40% could provide important dates, such as birthdays, for family members. For those over 50, 87% could remember details(细节) on family. The study also found that 58% wrongly believed it impossible to remember most of the numbers and passwords they use every day.

1.Which of the following problems is Robertson most worried about?

A. Wasting much time on cell phones. B. Facing many information problems.

C. Remembering too many numbers every day. D. Depending too much on cell phones for memory.

2.What does the writer most probably agree with?

A. Memory improves as people age. B. Memory becomes poorer if used less.

C. Too many passwords lead to memory loss. D. It’s impossible to remember most passwords.

3.What is the main idea of the text?

A. Cell phones have changed people’s life. B. Cell phones should be used less often in daily life.

C. Cell phones reduce brain power in a way. D. Cell phones help people remember more numbers.