For several billion years after the "Big Bang", the earth was still just a cloud of dust. What it was to {#blank#}1{#/blank#} was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. The earth became so {#blank#}2{#/blank#} that it was not clear whether the shape would last or not.

     {#blank#}3{#/blank#} eastward, you'll pass mountains and thousands of lakes and forests, as well as wide rivers and large cities. Some people have the idea {#blank#}4{#/blank#} you can cross Canada in less than five days, but they forget the fact that Canada is 5500 kilometers from coast to coast. Here in Vancouver, you're in Canada's warmest part. People say it is Canada's most beautiful city. {#blank#}5{#/blank#} by mountains and the Pacific Ocean. Its population is increasing rapidly. The coast {#blank#}6{#/blank#} of Vancouver has some of the oldest and most beautiful forests in the world.

    However, this was not easy. When they first arrived in Gombe in 1960, it was unusual for a woman to live in the froest. {#blank#}7{#/blank#} after her mother came to help her for the first few months {#blank#}8{#/blank#} she allowed to begin her project. Her work changed the way people think about chimps. For example, one important thing she discovered was that chimps hunt and eat meat. Until then everyone {#blank#}9{#/blank#} thought chimps ate only fruit and nuts. She also discovered how chimps communicate with each other, and her study of their body language helped her {#blank#}10{#/blank#} their social system.

    When you step into a new environment,you might have some difficulty in fitting in.Here are some tips{#blank#}1{#/blank#} might help you.

    Be confident.You are unique in this world.Spend some time thinking about your{#blank#}2{#/blank#}(strong) and you will be able to build up confidence step by step.

Be kind to everyone.Kindness is the bridge to your own happiness.Always give more than you receive,and think more of others than of {#blank#}3{#/blank#}(you).A person who cares for others is popular everywhere.

    Be active in group activities.{#blank#}4{#/blank#} (vary) activities like playing football can help you to be known{#blank#}5{#/blank#}others. You may add more friends to your circle.At the same time,you'll be amazed{#blank#}6{#/blank#}(see) how much they like you.

    Be optimistic.Optimism{#blank#}7{#/blank#}(make) both you and others feel pleased.It helps you make{#blank#}8{#/blank#}good first impression.A pleasant smile costs the{#blank#}9{#/blank#}(little) but does the most.If you follow the suggestions{#blank#}10{#/blank#}(mention) above,you will be accepted by people around you.And you will fit in very well and enjoy your new life.

    Sam was a greedy and selfish man.He never hesitated to cheat others to earn money.The selfish man{#blank#}1{#/blank#}(actual) wanted to own everything in the world.One day,he lost a small bag{#blank#}2{#/blank#}(contain) 50 gold coins.He searched{#blank#}3{#/blank#}the bag day and night.He also sent his workers in search but none could find it.

    After a couple of days{#blank#}4{#/blank#}ten year old girl told her father that she found a small bag with 50 gold coins.The family was rather poor but the honest man decided to give the bag to its owner.He gave it back to Sam and asked him to check{#blank#}5{#/blank#}the bag had 50 gold coins.Sam,who was only happy to get the coins,decided to play a trick.He shouted,“There were 75 gold coins in this bag and you gave me only 50!Where are the other coins?You{#blank#}6{#/blank#}(steal) them!"The poor man was{#blank#}7{#/blank#}(shock) to hear this and they finally took the issue to court to get the right judgment.

    The judge heard both the sides.He examined the daughter and the poor man about the number of coins they had found in the bag and they assured{#blank#}8{#/blank#}was only 50!He asked Sam,"Are you sure you had 75 coins?"Sam nodded his head.Then the judge made his decision,"Since Sam lost a bag of 75 gold coins,the bag found by the girl{#blank#}9{#/blank#}had only 50 coins doesn't belong to Sam.In addition,there were no claims against the{#blank#}10{#/blank#}(lose) of 50 coins and I order the girl and his father to take those 50 coins as appreciation for their honesty!"

Nosey and the Porcupine（豪猪）

    Nosey knew that she was supposed to stay in the yard, but the gate was let open. She took a glance {#blank#}1{#/blank#} the woods up the street. For Nosey there was nothing as wonderful as {#blank#}2{#/blank#}(dash) among the trees and sniffing（嗅）the flowers. After all, she was called Nosey for a reason. Her name described her usual, day-to-day {#blank#}3{#/blank#}(behave).

    She quietly slipped out of the yard and headed towards the woods. Soon after Nosey arrived in the woods, a butterfly landed on her nose. She reached for it, {#blank#}4{#/blank#} it few away. Then Nosey {#blank#}5{#/blank#}(spot) it again on a berry bush. When she was within striking distance, she jumped. The butterfly fluttered out of Nosey's reach once more, but it was too late for Nosey {#blank#}6{#/blank#}(stop). She landed directly on top of the berry bush with a crash. At first, she was astonished by the sudden fall. Then she was shocked to find {#blank#}7{#/blank#}(she) face to face with a sleeping porcupine under the bush!

    The arrival of a {#blank#}8{#/blank#}(noise) visitor caused the porcupine to wake up. Nosey had ever seen a porcupine before, so she gently sniffed at it with her nose, {#blank#}9{#/blank#} really annoyed the porcupine. He turned around and the quills（棘刺）on his tail were standing up. {#blank#}10{#/blank#}(sudden) Nosey found herself with a nose full of quills.

    If you go out to the fields at night in spring or summer, you can hear frogs singing {#blank#}1{#/blank#}（joy） here and there. It seems as if they were performing a field symphony.

    The frog is a good and useful creature that benefits human beings. They can catch fast-moving insects. Each frog eats a large number of pests that are harmful{#blank#}2{#/blank#}crops. This little creature is regarded{#blank#}3{#/blank#}the natural enemy of pests".

    {#blank#}4{#/blank#}now frogs are getting fewer and fewer. This is because they are killed and put on the table as a delicious dish by their chief enemy, human beings. It is {#blank#}5{#/blank#}shameless and cruel act, isn't it?{#blank#}6{#/blank#}cause responsible for the rapid reduction of frogs is that farmers use insecticides （杀虫剂）to kill pests and frogs get killed as a result of drinking poisoned water{#blank#}7{#/blank#}eating poison-killed insects.

    Something must be done without delay{#blank#}8{#/blank#}（save）frogs. If we don't punish those{#blank#}9{#/blank#}sell and kill frogs to make money, then one day all of us {#blank#}10{#/blank#}（punish） by nature for failing to keep the balance of nature.

    Your teeth may be part of your smile, {#blank#}1{#/blank#} they have a more important job­they are the first step in the process of digestion. You have three {#blank#}2{#/blank#}(kind) of teeth. In the very front of your mouth are eight flat, thin teeth called incisors. They are used for cutting and biting food. Next to these are pointed teeth called canines, {#blank#}3{#/blank#} also help you tear food. The remaining teeth are molars. These teeth have flat tops for crushing and grinding the food.