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.

    If you're a fan of penguins, you might enjoy{#blank#}1{#/blank#}(participate) in a new research project to help scientists measure changes to penguin populations.

    The project {#blank#}2{#/blank#} (name) Penguin Watch and the members are counting penguins in online {#blank#}3{#/blank#} (photo) taken across Antarctica, helping scientists monitor the species in their natural habitat. Up to now, nearly 40,000 volunteers have joined in the project.

    “Penguin Watch is people-powered research{#blank#}4{#/blank#} people can help and every click {#blank#}5{#/blank#} (matter) in helping us to understand penguins,” Tom Hart, {#blank#}6{#/blank#} expert from Oxford University and a member of the Penguin Watch team, told The Telegraph.

    The data {#blank#}7{#/blank#} (give) by volunteers will also help measure changes in not only the penguins' behavior and habitat, {#blank#}8{#/blank#} the larger ecosystem as well. “Finally, this huge data set allows us to {#blank#}9{#/blank#} (effect) train computers to take over from humans and helps us pass on the tools developed for penguins to the species {#blank#}10{#/blank#} threat,” said Hart.

    Football is a popular sport with fans all over the world. There is, however, an indoor version of the game {#blank#}1{#/blank#} (know) as "table football". It was invented in 1921 and people {#blank#}2{#/blank#} (get) great pleasure from it since then. The game is played on a special table. Players control their "team" by turning sticks, to which the "players" are attached. As in real football, {#blank#}3{#/blank#} (point) will be awarded when putting the ball in the other players' goal. Table football requires using hands and eyes together excellently, which is really exciting.