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 designed {#blank#}2{#/blank#} (take) 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 from terrible memories. {#blank#}8{#/blank#}, those who are{#blank#}9{#/blank#} 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.

    Did you grow up in one culture, your parents came from another, and you are now living in a {#blank#}1{#/blank#} (total) different country? If so, then you are a third-culture kid.

    The term “third—culture kid” {#blank#}2{#/blank#} (use) in the 1960s for the first time by Dr. Ruth. She first came across this phenomenon while {#blank#}3{#/blank#} (research) North American children living in India. In general, third-culture kids benefit from{#blank#}4{#/blank#} (they) intercultural experience and they often reach excellent academic results.

    Yet many {#blank#}5{#/blank#} (difficulty) may arise from this phenomenon. Third-culture kids may not be able to adapt themselves completely {#blank#}6{#/blank#} their new surroundings. Also, they often find it hard {#blank#}7{#/blank#} (develop) new friendship. Additionally, for a third-culture kid, it is often easier to move to a new country {#blank#}8{#/blank#} to return to his homeland. For example, after living in Australia for many years, Louis finally returned to the country {#blank#}9{#/blank#} she was born. She didn't know anything about current TV shows {#blank#}10{#/blank#} fashion trends. And she didn't share the same values as other teens of her age.

    Dogs are the best friends of man. It is a good idea to give them training. {#blank#}1{#/blank#} (actual), training a dog is very different from training humans. Of course, you have to deal with some characteristics of your dog at first.

    Dog training is not really {#blank#}2{#/blank#} easy task. You must be {#blank#}3{#/blank#}(patience) and work hard. Dog training is the process of teaching them how {#blank#}4{#/blank#}(follow) some basic orders, do tricks, hunt and so on. There is a lot of specific training that you can give your dog. But, if you are still a {#blank#}5{#/blank#}(begin), the process could be a bit difficult.

    Look for guides and try to figure out {#blank#}6{#/blank#} would be a good way to train your dog. With the help of these guides, you can save time {#blank#}7{#/blank#}(learn) what you should do, especially if the guides {#blank#}8{#/blank#}(write) by expert dog trainers.

    Training it {#blank#}9{#/blank#}(you) will take more time than hiring someone to train it for you. {#blank#}10{#/blank#} this training is your chance to get closer to your dog, and the results is worth your effort.

Getting around the city when you are six months pregnant and have a two-year-old girl can be really {#blank#}1{#/blank#} (challenge). One spring afternoon, we went to one of the grocery {#blank#}2{#/blank#}(store) nearby to buy some food. There was no sign of rain {#blank#}3{#/blank#} the store was just around the corner, so we went there without an umbrella. However, when we were about to leave the store) the rain came in full force and the streets {#blank#}4{#/blank#} (cover) with water within minutes.

I noticed a young Chinese couple staring at {#blank#}5{#/blank#} (we) when we came to a crossroad and were waiting for the light to change {#blank#}6{#/blank#} (patient). I figured they were probably wondering {#blank#}7{#/blank#} a pregnant foreigner was dragging her little kid out through the rain. But as we crossed the street, the woman offered me her umbrella. I declined but she handed it to me and hurried off with her husband.

Though {#blank#}8{#/blank#} (catch) in the rain unexpectedly, we still treasure {#blank#}9{#/blank#} memory and will remember the warmth and{#blank#}10{#/blank#} (kind) of the Chinese couple forever.