In recent years,sandstorms {#blank#}1{#/blank#}(occur) in China frequently,especially in northwestern areas, {#blank#}2{#/blank#}severe influence has caused wide concern in China.

There're several reasons for this.First of all,people are cutting down trees without planting more, {#blank#}3{#/blank#}(make) some land become deserts.Another reason is {#blank#}4{#/blank#}it rains less due to the environment pollution.

    To {#blank#}5{#/blank#}(efficient) prevent sandstorms,first,we should plant more trees and grass which can keep the soil {#blank#}6{#/blank#} being washed away.Second,more green fences should {#blank#}7{#/blank#}(build) along the desert, {#blank#}8{#/blank#}it helps to control the process of the desertification.

    Let's take action to do what we can {#blank#}9{#/blank#}(prevent) sandstorms from today.Soon the golden days we have been looking forward to {#blank#}10{#/blank#}(come).

    The dog, later {#blank#}1{#/blank#} (name) Arthur, came up to a Swedish team while the members were sharing a meal in front of a 20_mile race stage through the rough area in Ecuador. One of the {#blank#}2{#/blank#} (athlete), Mikael Lindnord, took pity on the dog wandering near their table and fed {#blank#}3{#/blank#} meatball to it. And that meatball made them friends for life, as far as Arthur was concerned.

The extreme sport of adventure racing includes biking, hiking, and boating that challenge even the {#blank#}4{#/blank#} (strong) humans. Imagine a dirty stray（迷失的）dog trying {#blank#}5{#/blank#} (keep ) up. But Arthur {#blank#}6{#/blank#} (do) keep up. The dog followed the team as they got up to leave. {#blank#}7{#/blank#} (actual), he never stopped following them—swimming alongside the boat of the team, and taking on muddy(泥泞的)slopes when the team hiked.

    Arthur stayed alongside the team for the rest of the {#blank#}8{#/blank#} (compete),but not without cost to his well—being. The dog needed doctor's attention after the six-day race was finished {#blank#}9{#/blank#} the team helped Arthur as much as they could during the event. Arthur's hard work paid off: Lindnord decided to adopt(收养) the dog {#blank#}10{#/blank#} brought him back to Sweden.

    {#blank#}1{#/blank#} is well known, optimism(乐观)plays an important role in one's life. Although we are facing many difficulties, we should keep optimistic. Optimism is a mental(精神的)attitude or world view and it means expecting {#blank#}2{#/blank#} best possible result from any given situation.

    I did {#blank#}3{#/blank#} (poor) in English in the past, but I never gave up struggling(搏斗). All my families, teachers and friends encouraged {#blank#}4{#/blank#} (I) and they taught me a lot of {#blank#}5{#/blank#} (use) ways of learning English. I {#blank#}6{#/blank#} (keep) practicing as they told me to do. I listened to English news and songs and I read interesting English stories. At weekends, watching some English movies was another good way to make my English better. {#blank#}7{#/blank#}difficulties I came across, I tried my best to work them out. I believe in myself, {#blank#}8{#/blank#} (believe) that hard work would finally pay off. Gradually, I make progress in my English. Nowadays, I can remember English words {#blank#}9{#/blank#} (easy) and use them freely when communicating with foreigners.

    Thanks to optimism, I have become one of the top English {#blank#}10{#/blank#} (learn) in my school now.