Once, a student said to his teacher that his life seemed harder     21     other people’s. The teacher had an idea. He made a     22     to teach him a lesson.

One day, he asked the student to get some salt and a glass of water.

The student returned with a glass of clean water and some salt. The teacher asked him to     23     the salt with the water and drink it.

“How does it taste?” the teacher asked.

“It tastes bitter,” the student answered.

The teacher didn’t say     24     else, but asked the young man to get the same amount of salt and follow the teacher to a nearby lake.

“Put the salt into the lake,” the     25     said. The young man did what the teacher said.

“Now, taste the water from the lake and then     26     me how it tastes,” the teacher said.

“It tastes much     27     ,” the student said.

“Do you taste the salt?” the teacher asked.

“No,” the young man shook his head.

The teacher sat beside the young man and said, “The pain     28     life is like salt — no more, no less. However, the bitterness (苦味) you taste depends on the container (容器) you put the pain in.”

The amount of pain in life is     29     the same. So when you are in pain, the only thing you can do     30     to make your mind large. Stop being a glass, and become a lake.

Last Friday, I agreed to meet some friends at 4:00 pm in a coffee shop. The weather was sunny, _________ I made a decision to walk there. I arrived ten minutes early. I ordered a cup of coffee and _________ down watching people around. There were some boys playing football on the street, and a small boy was running after the ball.

Just at that time, there came a car. It was going very _________. When the driver saw the boy in his way, he braked (刹车) hard. But it was too late. The car _________ the boy. And the small boy was _________ on the street without moving. However, the driver drove away quickly.

People ran to the boy. There was a cut on the boy’s head and he lost much _________. I called the police and _________ called 120. Soon an ambulance (救护车) arrived and took the boy to the _________.

At 4:30 pm, the police arrived and started questioning people. They asked me to go to the police station because I saw _________ happened. I told them all the information I knew because I really wanted them to catch the driver. I didn’t leave the police station until 7:00 pm. After that, I went home and didn’t go to meet my friends because I didn’t feel like talking to anyone.

The next day, the boy’s parents called me to thank me _________ my help. They also told me their boy was fine and the driver was already at the police station then.

Monday, January 21st

I'm a virus (病毒) for the common cold. It has been a long time since I infected (感染) humans last time. Today I tried to infect a boy in a primary school all day.

His name is Sam. I waited on his desktop, and when he touched the desk I jumped on his finger. Unluckily, Sam didn't touch his eyes, mouth or nose. Then, right after class, he washed his hands. Now I'm full of soap and sitting in a sink!

Tuesday, January 22nd

This morning I jumped into the nose of Sam's best friend, Bill. Unluckily, the mucus (粘液) in his nose caught me. I thought it was over for me, when suddenly Bill sneezed while he was talking to Sam.

I knew that would send me right into Sam's face! However, Sam quickly gave Bill a tissue, and Bill sneezed into that instead! Infecting people is harder than I imagined.

Wednesday, January 23rd

I'm feeling very unhappy today. Some scientists caught my friend Harry and put him under a microscope. Harry is a flu virus and he's a dangerous little guy. Besides, Sam at all his vegetables today. He's exercising, and he's getting eight hours of sleep every night. His body is too strong for me!

Thursday, January 24th

I tried to infect Sam again today, but he washed his hands five times and never touched his face! He also gave tissues to every student in his class who was sneezing. It's impossible to give him a cold! So I have to give up and I'm moving to another school.

Teeth are important part of our body． Everyone should brush his or her teeth every day． Learning how to take care of teeth is very important．

The importance of brushing teeth

If you eat and do not brush your teeth，pieces of food that stick to your teeth can cause problems．The food can damage（破坏）your teeth．Then germs（细菌）can get into your teeth and make them decay（腐烂）．

It is important to brush teeth every day．You should get a checkup from your dentist every year．Trying not to eat food that has a lot of sugar，such as candy and soft drinks，helps to protect teeth．

The proper ways of brushing teeth

Do you know that most people do not brush their teeth in the right way？ Follow the methods below and they will help you keep your teeth healthy，clean and beautiful．

♦Replace your toothbrush every few months．

♦Clean two or three teeth at a time． Brush the front of your teeth with a circular motion（运动）and clean the backs of your teeth with up and down motions．

♦Use a gentle back and forth motion to clean the tops of your teeth where you bite （咬）into food．

♦Don't forget to gently brush the top of your tongue （舌头）from back to front．A lot of germs live there．

♦Take at least 2 minutes to brush your teeth．