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The term “multitasking” originally referred to a computer's ability to carry out several tasks at one time. For many people, multitasking has become a way of life and even a key to success. In fact, some excellent mental aerobic exercises (大腦訓(xùn)練) involve engaging the brain in two or more challenging activities at a time. Although checking e-mail while talking on a phone and reading the newspaper may be second nature for some people, many times multitasking can make us less productive, rather than more. And studies show that too much multitasking can lead to increased stress, anxiety and memory loss.

In order to multitask, the brain uses an area known as the prefrontal cortex (前額葉腦皮層). Brain scans of volunteers performing multiple tasks together show that as they shift from task to task, this front part of the brain actually takes a moment of rest between tasks. You may have experienced a prefrontal cortex “moment of rest” yourself if you've ever dialed (撥電話) a phone number and suddenly forgotten who you called when the line is answered. What probably occurred is that between the dialing and the answering, your mind shifted to another thought or task, and then took that “moment” to come back. Research has also shown that for many volunteers, job efficiency (效率) declines while multitasking, as compared to when they perform only one task at a time.

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 attention-requiring 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 e-mail while on the phone with a friend, they may come off as absent-minded or disinterested. It can also cause that person to miss or overlook key information being passed on to them.

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.

2. According to Paragraph 2, why may a person suddenly forget who he has called?

A. He may have his prefrontal cortex temporarily damaged.    

B. He is probably interrupted by another task.

C. He is probably not very familiar with the person he has called.    

D. He may need a rest between dialing and speaking.

3. People tend to make mistakes when       .

A. they perform several challenging tasks at a time 

B. new messages are processed one after another    

C. their relationships with others are affected       

D. the tasks require little thought

4. What is the main idea of the passage?

A. Multitasking has become a way of life.

B. Multitasking often leads to efficiency decline.

C. Multitasking exercises need to be improved.

D. Multitasking enables people to remember things better.

One day last November, Tom Baker stopped out of his house into the morning light and headed across the rice fields toward the bank of the Rapti River. Tom, a 32-year-old school teacher in the farming village of Madanpur, was going for his morning bath.

As he approached(走近) the river, the head of a tiger(老虎) suddenly appeared over the edge of the river bank. Before he could turn to run, the tiger was upon him. It jumped on his shoulder and threw him to the ground, its huge jaws attacked his head in a killing bite.

Peter Smith was also on his way to the river and saw the attack. He screamed. The tiger lifted its head and roared(吼叫) at him. Peter ran.

From the window of his house John Brown heard the tiger roar and ran out to see it attacking a man. He screamed, too, and all the villagers ran out shouting as the tiger dropped its victim(犧牲品) and ran off. When the villagers reached the river bank, Tom was already dead.

For the villagers, the horror of the incident intensified(加劇) by the tales of man-eating tigers that has once run around in the countryside, killing hundreds.

How many people saw the tiger before it was driven off?

A One person.       B. Two persons.       C. Three persons.      D. Four persons.

The reason why the tiger attacked the man was     .

A. it was hungry                  B. it was angry

C. it was frightened by the man       D. not mentioned in the passage

When did the attack take place?

A. Early in the morning          B. At noon

C. Late in the afternoon          D. At five before dark

According to the passage, the underlined word screamed in the third paragraph    probably means ____.

A. gave a sharp cry because of fear.                 B. shouted out for help.

C. made some loud noise.                         D. cried out in pain.

BILL GATES has promised to give all of his US $ 58 billion fortune to charity—rather than leaving it for his children.

The founder of Microsoft, who steps down from his post Friday, said he wants to make a “positive contribution” to the world. He has promised to transfer his money to the charity he has set up with his wife Melinda, The Bill and Melinda Gates Foundation, which funds health and education projects around the world.

He revealed(透露) his decision a week before he steps down as executive chairman of Microsoft, the firm he founded more than 30 years ago. The 52?year?old will continue to work as non?executive chairman and will spend just one day a week at the business.

Speaking about the joint?decision he made regarding his fortune with his wife, he said,“We’ve chosen not to pass it on to our children. We want to give it back to society in the way that it will have the most positive impact.” He said he did not want to leave it in his will for his children and added,“It’s like saying which children are most important.”

In an interview with BBC’s Newsnight, he said:“I want to make a positive contribution to the world.”

Bill Gates will step down from his post Friday, 33 years after he founded Microsoft in 1975. His success with the computer giant has made him the richest man in the world for 13 years in a row according to Fortune magazine’s rich list.

When he founded the firm he said he wanted to put “a computer on every desk and in every home.” Many people have said that the computer revolution would not have happened without him and more than 90 percent of computers in the world run on Microsoft Windows.

He will be succeeded in his post by Steve Balmer, the co?chief executive since 2000. Although the move was announced two years ago and there has been lots of planning, many people speculate that Gates’ departure will leave a big gap in the firm.

Charlene Li, from Consultants Forrester Research, said:“What they’re going to lose is that founding focus, and the ability to rally the troops.”

Microsoft has an outstanding financial performance and currently has profit margins estimated at 30  percent. The Bill and Melinda Gates Foundation claims to be the biggest philanthropic organization in the world.

Why has BILL GATES promised to give all of his US $58 billion fortune to charity?

A.He wants to make a positive contribution to the world.

B.He has set up the charity with his wife Melinda.

C.He has decided to step down from his post.

D.More than 90 percent of computers in the world run on Microsoft Windows.

Who set up the charity to which Bill Gates will transfer the money?

A.Bill Gates.                    B.Melinda Gates.

C.Bill Gates and his wife.        D.Bill Gates and Steve Balmer.

What’s Charlene Li’s attitude towards Bill Gates’ departure?

A.Optimistic.  B.Worried.    C.Critical.        D.Neutral.

The underlined sentence “He will be succeeded in his post by Steve Balmer.” means Steve Balmer will.

A.be as successful as Bill Gates

B.fill the gap Bill Gates leaves in the firm

C.start a computer revolution with the help of Bill Gates

D.take over after Bill Gates steps down

Jenny was almost five. Waiting with her mother at the checkout stand, she saw a circle of white pearls（珍珠） in a box. “Oh please, Mommy .Can I have them? Please, mommy, please!”

Quickly the mother checked the back of the little box and said ,” That’s almost $2.00. If you really like them, I’ll think of some extra chores for you and in no time you can save enough money to buy them for yourself.”

Then Jenny began doing more chores at home and did housework for neighbors. On her birthday, Grandma gave her another new dollar bill and she had enough money to buy the necklace.

Jenny loved her pearls. She wore them everywhere, even to bed.

Jenny had a very loving daddy and every night when she was ready for bed, he would stop whatever he was doing and come upstairs to read her a story. One night when he finished the story, he asked Jenny, “Do you love me?”

“Oh yes, Daddy. You know that I love you.”

“Then give me your pearls.”

“Oh, Daddy, not my pearls. But you can have my Princess.”

“That’s okay, Honey. Daddy loves you. Good night. ”And he brushed her cheek with a kiss.

About a week later, after the story time, Jenny’s daddy asked for the pearls again. And Jenny refused him again.

A few nights later when her daddy came in, Jenny was sitting on her bed with her legs crossed. As he came close, he noticed one silent tear rolling down her cheek.

“What is it, Jenny? What’s the matter?”

Jenny didn’t say anything but lifted her little hand up to her daddy. And when she opened it, there was her little necklace. She finally said, “Here, Daddy. It’s for you.”

With tears gathering in his own eyes, Jenny’s kind daddy reached out with one hand to take the dime-store necklace, and with the other hand to reach into his pocket and pull out a blue case with real pearls and gave them to Jenny. He had had them all the time. He was just waiting for her to give up the dime-store stuff so he could give her the real treasure.

What does the underlined word “Princess” mean?

A. It may be the daughter of the king .

B. It may be one of her toy girls.

C. It may mean Jenny`s teacher.

D. It may mean another necklace.

Why did tears come down when Jenny offered her necklace to her father?

A. Jenny felt sorry because she would lose her favorite.

B. Jenny felt excited because her father would give her a new necklace.

C. Jenny felt sad because the necklace she had bought was expensive.

D. Jenny `s father spent too much money on the necklace.

What’s the best title?

A. The Necklace      B. Father      C. Mother      D. Daughter

“Susan, go and join your sister cleaning the yard.” “Why ______? John is sitting there doing nothing.”

A. him             B. he              C. I               D. me