Sometimes, we see some people reading books while biting their nails (咬指甲). According to the BBC(英国广播公司), up to 45 percent of teenagers bit their nails. There is not an exact answer to{#blank#}1{#/blank#}   why people bite their nails. But most commonly, nail biting is said to be a nervous habit. It is done  {#blank#}2{#/blank#}  of stress(压力), boredom or excitement.

 What's more, a report says that people with higher levels of intelligence(智力)  {#blank#}3{#/blank#}  biting their nails at an early age. It believes that compared  {#blank#}4{#/blank#}  common person,  {#blank#}5{#/blank#}   with higher levels of intelligence may feel higher levels of stress more easily.

 This habit is   {#blank#}6{#/blank#}   for the biters. It can give them red or sore fingertips. And long-term nail biting can affect(影响)   {#blank#}7{#/blank#}   nails grow.

 But don't worry! There are many   {#blank#}8{#/blank#}  to stop biting your nails. First, keep your nails clean. The more you focus on taking care of your nails, the  {#blank#}9{#/blank#}   likely you may bite them again. Also, when you feel stressed, try to relax.  {#blank#}10{#/blank#}  exercise or having a warm bath both help.

    Hello! My name is Susan Smith. I'm a(n){#blank#}1{#/blank#}girl. This afternoon I lost (丢失) my schoolbag on my{#blank#}2{#/blank#}home. It is black and red. I{#blank#}3{#/blank#}to find it. A blue pencil-box, a student ID card (学生证) and some{#blank#}4{#/blank#}are in it. Well, a(n){#blank#}5{#/blank#}eraser, a black pen, a pink ruler and a family{#blank#}6{#/blank#}are in the pencil-box.{#blank#}7{#/blank#}you find my schoolbag, you can{#blank#}8{#/blank#}me. My telephone{#blank#}9{#/blank#}is on the student ID card. It's 4432-5936. Well, you can email me at susan @ 163. com, too. Please{#blank#}10{#/blank#}! Thanks. 

    Nobody likes a computer virus, but at least you can get rid of it. And there is a lot of anti-virus(抗病毒) software these days. It can find a virus, fix it and you can forget about it. Unluckily the same isn't{#blank#}1{#/blank#}for spyware(间谍软件).

    What is spyware? It is software that{#blank#}2{#/blank#}somewhere on your computer. It collects information about what you do on the Internet and passes the information on to companies without your permission(允许). If you shop on the Internet and use your credit card, you should know that some spyware will{#blank#}3{#/blank#}the information.

    Your computer can catch spyware through lots of ways. If you open the wrong e-mail, {#blank#}4{#/blank#}you visit the wrong website, spyware can download itself onto your computer. And spyware often comes with free software.

    It was Sunday. The weather was very fine. The students of Class One {#blank#}1{#/blank#} for a picnic. They went by bus with fruit, vegetables, meat, cookers and some other things.

    At about half past ten, they {#blank#}2{#/blank#} at the foot of a hill. There was a big lake and many green trees. Birds were singing and the air was very clean. The students began to {#blank#}3{#/blank#} for the lunch. Some of the students were getting water from the lake. Some were washing vegetables and fruit. At about twelve o'clock the lunch was ready.

    The food was {#blank#}4{#/blank#}. After lunch, they had a great time singing, dancing, drinking and talking. At three o'clock they began to climb the hill. The hill was very tall, but they all tried to climb to the top(顶部) of it. On the top of the hill, they felt very excited.