Writing text messages while walking is dangerous. A study says it is more dangerous than texting while driving. Researchers found that there are more {#blank#}1{#/blank#} (injury) to texting pedestrians(行人) than there are to texting motorists. Their report says walking is not as easy {#blank#}2{#/blank#} we think. We must focus on many things at the same time to walk safely in a straight line. The researchers said that people forget how to walk {#blank#}3{#/blank#} (proper), so dangerous things happen to them. They bump(撞) into walls and other people. They walk into cars, fall over things in the street, {#blank#}4{#/blank#} even fall into holes.

    A professor said walking is a difficult action. There are several reasons {#blank#}5{#/blank#} texting makes walking dangerous. {#blank#}6{#/blank#} is that people cannot see the street. Another is that they focus on their phone keyboard instead of their feet. A final reason is that their minds are somewhere else—they are not thinking about {#blank#}7{#/blank#} (walk) from A to B safely. The professor said over 6,000 people {#blank#}8{#/blank#} (visit) his hospital last year because of texting. He said {#blank#}9{#/blank#} worst cases are head injuries. When a pedestrian is tossed into the air he/she has nothing {#blank#}10{#/blank#} (protect) the head. The damage can be serious.

When we talk about paper, we think of newspapers and books. But there is some paper{#blank#}1{#/blank#}(use) in many other ways. Only half of{#blank#}2{#/blank#} world's paper is used for books and newspapers. Paper , on{#blank#}3{#/blank#}we usually write and draw , is very good for keeping you warm. You have perhaps seen homeless men asleep on a large number of newspapers. In Finland, it is sometimes -40℃ in winter. The farmers wear paper boots in the snow. Nothing could be{#blank#}4{#/blank#} (warm).

    Each year, more and more{#blank#}5{#/blank#} (thing) are made of paper. We have had paper cups and plates for a long time. But now we hear that chairs, tables, and even beds can{#blank#}6{#/blank#}(make) of paper. With paper boots and shoes, you can also wear paper hats, paper dresses, and paper raincoats{#blank#}7{#/blank#}you have used paper cups once, you throw them away and buy new{#blank#}8{#/blank#}(one).

    The latest use of paper seems to be paper houses. These are not small houses for children {#blank#}9{#/blank#}(play) in, but real, big houses for people to live in. You can buy a house with three rooms for about 500 dollars. You can put it up by yourself in a few hours{#blank#}10{#/blank#}you can use it for about five years.