On a cold winter day, a fox {#blank#}1{#/blank#} mother bear that he would teach her how to fish. As she{#blank#}2{#/blank#} to learn, he took her to a hole in the ice, and told her to put her tail down in the water. He told her to keep the tail there for{#blank#}3{#/blank#} . Then{#blank#}4{#/blank#} she pulled the tail out of the water, she would find fish around the tail. The bear was foolish enough to believe{#blank#}5{#/blank#} the fox said. She sat for a long time with her tail in the water. She was {#blank#}6{#/blank#} the fish. But when she{#blank#}7{#/blank#} to pull her tail lout of the water, she found that it was frozen in the ice. She asked the fox to pull her out. But he laughed to himself and {#blank#}8{#/blank#} . so she called father bear to help her. Father bear came. He pulled hard and {#blank#}9{#/blank#} got her out, but a part of her tail was in the ice. That is{#blank#}10{#/blank#} people find the bear's tail so short.

    An ant was walking by a river. She looked at the river and said to herself, “{#blank#}1{#/blank#} nice and cool this water looks! I must drink some of it.” But {#blank#}2{#/blank#} she was drinking, she slipped(滑倒) into the river.

    Luckily a bird was sitting in the tree. The bird quickly used his mouth {#blank#}3{#/blank#}(cut) a leaf from the tree. He dropped the leaf into the river near the ant.

    The ant climbed onto the leaf, and the wind blew the leaf to the bank. And the ant {#blank#}4{#/blank#}(save).

     “Thank you!”shouted the ant, {#blank#}5{#/blank#} her low voice. But her voice was {#blank#}6{#/blank#} low that the bird couldn't hear it.

    After a few days, the bird was building his nest. Suddenly a bird catcher {#blank#}7{#/blank#}(careful) took out his nest(网). He quietly walked towards the branch where the bird was sitting.

    The ant saw this, and ran quickly to bite the {#blank#}8{#/blank#}(man) leg. “Ouch” The pain in his leg made the man drop his nest. The bird heard the noise and {#blank#}9{#/blank#} (fly) away.

    The bird never knew how the little ant helped. {#blank#}10{#/blank#} the ant was happy that she was able to do something for the bird.

Sports in ancient China

People in ancient China worked long hours each day. To relax, they  {#blank#}1{#/blank#}   (invent) many games. Some of them had a long history.

 Chuiwan 捶丸

Chuiwan was one of the ball games in ancient China, which was very popular in the Song Dynasty. "Chui" means "hit"{#blank#}2{#/blank#} "wan" means "ball" . This sport was similar to golf. On a large field, the players were divided into two groups. Usually there were 2 to 10 people in each group. They used a stick{#blank#}3{#/blank#} (hit) the ball into holes. Only when three hits into the hole were achieved did the player win the point{#blank#}4{#/blank#} (successful).

 Cuju 蹴鞠

First recorded 2,000 years ago, cuju is known as the  {#blank#}5{#/blank#}  (early) form

of football. The ball was made  {#blank#}6{#/blank#}  leather (毛皮) on the outside and filled

with rice bran (米糠) inside.{#blank#}7{#/blank#} (it) rules were similar to football's. Each

team usually had 12 or 16 players. No hands were allowed. Only  {#blank#}8{#/blank#} (foot)

and heads could be used. The ball should be hit into the opposite goal.

Archery 射箭

In the Western Zhou Dynasty, archery was {#blank#}9{#/blank#}important part of education for a gentleman. At the age of 15, they began learning shooting. The most famous competition was Grand Archery. It{#blank#}10{#/blank#}(hold) by the emperor. The competitors bowed before shooting and drank together after.

Getting Your Sleep Cycle (周期) Right

Warning: this article may make you want to yawn (打哈欠). Why? It's because we're looking into the world of sleep cycles.

Our bodies sleep in 90-minute cycles, experiencing five to six each 1 . At first, you enter a light stage (阶段) of sleep when your muscles (肌肉) 2 . Then, the body temperature drops, and the heart beat slows.

Next comes 3 sleep. It's difficult to wake up this stage. This is when your body repairs 4 and builds up energy (能量) for the day ahead. 5 , you get into the rapid eye-movement (REM，快速眼动) sleep stage. It is when most dreaming happens. 6 REM sleep, the cycle repeats.

Waking up in the morning in the "wrong" stage can make you feel especially 7 . An app called Sleep Calculator can help you avoid this. It's a tool made to work out the 8 bedtime for you based on your wake-up time.

Developed by the UK company Hillarys, this smart calculator considers the 9 cycles our bodies go through each night. Whether you're an early bird or a night owl (猫头鹰), simply input your wake-up time , 10 the calculator will work its magic, suggesting the perfect bedtime to make sure that you 11 and shine with a spring in your step.

It's also worth noting that you shouldn't just 12 your sleep cycle whenever you want. Many young people go to bed 13 and get up late, such as sleeping from 2 a.m. to 10 a.m. They 14 as long as they have 8 hours of sleep, everything will be fine.

But in fact, our bodies can tell the 15 , especially by using light and temperature. If we wake up too late, we may feel a bit like a zombie (僵尸). That's why sometimes we feel even more tired after oversleeping.

A tornado (龙卷风) is a kind of strong storm with air which moves in a circle quickly.  They can move over 200 miles per hour and cause a lot of damage.  As they move across the land, they can easily pick up cars, trucks, and even houses, and then throw them very far.  It is important to find a safe place if a tornado gets close.  

A safe place could be a basement or the lowest floor.  If you are in a home without a basement, try to find a first-floor bathroom or a small room without windows in the middle of your house.  You should curl up (蜷缩) into a ball and cover your head and neck with your hands.  

But there are some people who actually want to get close to tornadoes.  They are scientists who want to learn more about tornadoes.  One of the best ways to do this is to get as close as possible to the tornado.  They use special tools to measure (测量) what is happening in and around a tornado.  

One special tool is called a tornado probe (探测仪).  Inside the tornado probe, there are sensors (传感器) to measure wind speed, temperature, pressure, and direction.  Some probes even have cameras, so the scientists can see and understand what it's like to be in a tornado.  

To be able to get these measurements, the scientists have to get a tornado probe near or into a tornado.  Scientists will try to guess where a tornado will go next.  Then they drive to that location and put down the probe.  If they do not guess correctly, they pick up their probe and try another place.  If they are right, the tornado will go near or even right over the probe.  Then they take all of the measurements from the probe and use them to predict where future tornadoes may form and travel.  And they can give people some warning to keep away from a dangerous tornado.