Have you ever wondered whether where is life on Mars? The bog Red Planet is a mystery to us but {#blank#}1{#/blank#}(hope) not for much longer.

    On November 11, the Mars rover(漫步者){#blank#}2{#/blank#} (name) Curiosity started its journey into space. After eight months flying in a rocket, Curiosity covered more than 566 million kilometers and finally landed on Mars — according to BBC reports.

    The rover is there to find out {#blank#}3{#/blank#} there is, or ever was, life on the cold, desert-like planet.

    The place {#blank#}4{#/blank#} Curiosity landed is called Gale Crater, a huge hole on Mars. Scientists believe that there {#blank#}5{#/blank#}(be) once water and even life there.

    In order to do its job, Curiosity is packed with many {#blank#}6{#/blank#}(use) tools, though it is only three meters long, about the size of a small car.

    It has a robot arm that can collect soil and drill into rock. It also carries {#blank#}7{#/blank#} own laser gun. The gun can turn a small amount of rock into gas, so that Curiosity can study what the rock {#blank#}8{#/blank#}(make) up of.

    {#blank#}9{#/blank#} the help of these tools, Curiosity will act as a robot geologist. For the next two years, it will stay and travel inside Gale Crater,{#blank#}10{#/blank#} (collect) and studying rock and soil.

    I am sorry to hear that you are worried about the variety of English you have been learning.

    Firstly, the differences between British and American English may surprise those{#blank#}1{#/blank#}have learned English for years.There{#blank#}2{#/blank#}(be) almost no differences in grammar and only a few differences in vocabulary.British and American people have no difficulty{#blank#}3{#/blank#}(understand) each other.They watch films and televisions from each other's countries for{#blank#}4{#/blank#}(please).

    Secondly, there isn't only one British{#blank#}5{#/blank#}American English.For example,all major cities in the UK have{#blank#}6{#/blank#} (they) own dialects with different accents from each other.Sometimes these accents can be{#blank#}7{#/blank#}(hard) to understand for even a British person than some Americans.Also,there are Englishes from many other countries.People who speak these Englishes usually also manage{#blank#}8{#/blank#}(communicate) with other English speakers without any problems.

    All learners need to be able to understand English spoken and written by as many people as possible and they need to be able to speak English so that as many people as possible can understand them.You should concentrate on this goal,not on{#blank#}9{#/blank#}to speak “British” or “American” English.

    I hope this is{#blank#}10{#/blank#}(help).

    One evening years ago in New York, I sat on a bench in a park and watched a little boy, around 2 years old,{#blank#}1{#/blank#} (run) freely on the grass as his mother watched from a short distance away. The boy would fall to the grass,{#blank#}2{#/blank#}(get) up, and without looking back {#blank#}3{#/blank#}his mother, run as fast as he could as if nothing had happened.

    When kids fall down, they don't think of the fall as a failure. Instead, they consider{#blank#}4{#/blank#}as a learning experience. They try again and again until they succeed. While I{#blank#}5{#/blank#}(touch) by the boy's strong mind, I was also touched by the way he ran. With each attempt, he looked so confident and natural. He only wanted to run{#blank#}6{#/blank#}(free) and to do it as {#blank#}7{#/blank#}(good) as he could. He was just being a child—just being himself—being completely in the moment. He never gave up. Each time he{#blank#}8{#/blank#}(fall), he got himself back up again, as if he knew that falling down was simply a part of life. He was not looking for others' smiles, or worrying about{#blank#}9{#/blank#}someone was watching or not. He only wanted to run and to feel the experience of running fully and freely.

    I learned a lot from that experience, and have successfully brought that lesson with me in many{#blank#}10{#/blank#}(part) of my life.