Not all memories are sweet. Some people spend all their lives trying to forget bad experiences.

   Now American researchers think they are close to developing a pill, {#blank#}1{#/blank#} will help people forget bad memories. The pill is {#blank#}2{#/blank#}(design)to be taken immediately after a frightening experience. They hope it might reduce, or {#blank#}3{#/blank#}(possible) erase (抹去) the effect of painful memories.

   In November, experts tested a drug on people in the U.S. and France. The drug stops the body from {#blank#}4{#/blank#}(release) chemicals that fix memories in the brain. So far, the research {#blank#}5{#/blank#}(suggest) that only the emotional effects of memories may be reduced, not that memories are wiped out. They are not sure to the degree people's memories are affected.

   The research has caused a great deal of {#blank#}6{#/blank#}(argue). Some think it is {#blank#}7{#/blank#}bad idea, while others support it. Supporters say it could lead to pills which prevent or treat soldiers' troubling memories after war. They say that there are many people who suffer {#blank#}8{#/blank#}terrible memories. {#blank#}9{#/blank#}, those who are against the research say that maybe the pills can change people's memories and changing memories is very {#blank#}10{#/blank#}(danger) because memories give us our identity.

    Recently Lindsay hasn't felt herself. She{#blank#}1{#/blank#}(be) a really good student, but her grades has fallen since three months ago. This is because she sometimes has trouble {#blank#}2{#/blank#}(pay)attention to her study. She also refuses to talk with teachers and friends. What's worse, she feels{#blank#}3{#/blank#}(tire) all the time but has difficulty in falling asleep.{#blank#}4{#/blank#}she does is brought to her mother's attention.{#blank#}5{#/blank#}, when her mother asks her what happens to her, she just says she feels like {#blank#}6{#/blank#}(cry).

    As a matter of fact, Lindsay is suffering {#blank#}7{#/blank#}clinical depression(临床抑郁症). What is clinical depression? It can be described as a mood which is so low that affects your everyday life{#blank#}8{#/blank#}(serious). The first sighs of it in teens are {#blank#}9{#/blank#}(poor) school reports than before, then learning difficulties and staying away from classmates and teachers. If you have these signs, don't worry. It is not so difficult to deal with clinical depression. There are many effective ways, such as medicine,{#blank#}10{#/blank#} (express) of feelings, more exercise and a balanced diet.

    Our parakeet (长尾鹦鹉) Chip and Goldie, a stray tortoiseshell kitten we took in{#blank#}1{#/blank#} (grow) to be best friends, eating and playing together. I was a member{#blank#}2{#/blank#}a bird conservation organization at the time, so we often took care of injured {#blank#}3{#/blank#}(bird). Goldie helped raise dozens of injured and orphaned native birds{#blank#}4{#/blank#} (act) as a watchful guardian. One day, it was Chip who needed Goldie's supervision. I had left a large bowl of pancake batter (面糊){#blank#}5{#/blank#} (cover) in the kitchen. But while I was out of the room, Chip climbed onto the bowl to have {#blank#}6{#/blank#} taste but soon fell in and sank{#blank#}7{#/blank#} (luck), Goldie was on hand and stuck her face in the bowl to fish Chip out. She cleaned his face and beak so he could breathe before running to alert me with a loud meow. I followed Goldie{#blank#}8{#/blank#} was also covered in batter, back into the kitchen {#blank#}9{#/blank#} found a battered budgie on the floor. After being washed, dried and warmed, Chip made a full {#blank#}10{#/blank#} (recover). Bowls were always covered in future and Goldie and Chip remained the best of friends.

    Are you a man or a mouse? When {#blank#}1{#/blank#} (ask) this question, people want to know {#blank#}2{#/blank#} you think you are a brave person or a coward. But you will never really know the answer to this question until you {#blank#}3{#/blank#} (test) in real life. Some people think they are brave but when they come face to face with real danger, they act like cowards. {#blank#}4{#/blank#} think of themselves as cowards, but when they meet danger, they act like {#blank#}5{#/blank#} (hero).

    When you are in a very dangerous situation and feel afraid, the body automatically produces a chemical {#blank#}6{#/blank#} (call) adrenalin (肾上腺素) in the blood. With adrenalin in the blood system, you feel {#blank#}7{#/blank#} (strong) than ever before. {#blank#}8{#/blank#}, when you are absolutely {#blank#}9{#/blank#} (terrify), the body can produce too much adrenalin, {#blank#}10{#/blank#} makes you find you can't do anything at all.

    A neighborhood watch is an {#blank#}1{#/blank#} (organize) group of people who have volunteered to help prevent crime in their neighbourhood. They do this by {#blank#}2{#/blank#} (keep) an eye on their neighbors' households, patrolling the streets and contacting the police when they see wrong {#blank#}3{#/blank#} (activity). Neighbourhood watches have {#blank#}4{#/blank#} of history, but they{#blank#}5{#/blank#} (introduce) to modem American cities after the public was shocked {#blank#}6{#/blank#}( hear) how a woman was murdered in New York city while a number of witnesses stood by and did nothing. {#blank#}7{#/blank#}(recent), however, some people have strongly objected to the organization after n neighborhood watchman shot to death a black teenager, {#blank#}8{#/blank#} was on his way home in the evening. The shooting has led to a new suggestion {#blank#}9{#/blank#} neighborhood watchmen shouldn't carry guns while on patrol. Many neighborhood watch committees disagree {#blank#}10{#/blank#} this idea, saying that it will discourage volunteers from patrolling more dangerous districts. Besides, since Florida state law allows the carrying of guns, such advice is useless.