In many high schools, there are strict rules about using mobile phones. If your phone rings in class, for example, the teacher will be very angry.

    Every mobile phone has a ringtone (铃声). It tells you that someone is calling you. Now, there is a ringtone called “mosquitotone (蚊子铃声)”.

    Mosquitotone has a special sound. Only children and teenagers can hear it. As we get older, we are unable to hear some sounds with high frequencies (频率). As a result, a child or teenager can hear the mosquitotone ringtone, but someone of 20 or older can't.

    But sometimes, people over 20 can hear the ringtone. One British student's phone uses mosquitotone. In class, the student's phone rang. The 22-year-old teacher looked at the student and became unhappy. “I heard that. You know the rule：no mobile phone in class. ”

    Not all the students are interested in mosquitotone. Jerry Jones, a high school student of 17, says, “Using mosquitotone too often is bad for our hearing. I may use it for pleasure, but not in class. It's unfair(不公平的) to the teachers！”

    What do parents think of mosquitotone？“I think it is perfect for places like movie theaters,” says Connie Neeson, 44. “Think about it. You're watching a film and someone's mobile phone rings. Mosquitotone is good because many people don't hear it. However, it also has a bad influence（影响） on their study if students use it in class. ”

    Is there intelligent (有智力的) life on other planets? For years, scientists said "no" or "we don't know". But today this is changing. Seth Shostak and Alexandra Barnett are astronomers (天文学家). They believe intelligent life exists (存在) somewhere in the universe. They also think we will soon contact these beings (人；生物).

    Why do Shostak and Barnett think intelligent life exists on other planets? The first reason is time. Scientists believe the universe is about 12 billion years old. "This is long enough for other planets to have intelligent life," say Shostak and Barnett. The second reason is size—the universe is huge. "Tools like the Hubble Telescope (哈勃望远镜) have shown that there are at least 100 billion galaxies," says Shostak. "And our galaxy, the Milky Way, has at least 100 billion stars. Some planets going around these stars might be similar to Earth."

    In the past, it was hard to look for signs of intelligent life in the universe. But now, powerful telescopes (高倍望远镜) allow scientists to discover smaller planets. These planets might have intelligent life.

    Have beings from space already visited Earth? "Probably not," says Shostak. However, intelligent beings may contact us in other way, such as radio signals (信号). In fact, they may be trying to communicate with us now, but we don't have the right tools to receive their messages. However, this is changing. By 2025, we could make contact with other life forms in our universe and we might help each other.

要点: (1)开放时间: 每周三、周五下午5点至7点。 (2)活动: 观看英文电影, 参加英语演讲比赛(English speech contest),跟别人分享英语故事。参考词汇: if 如果, be open开放的, be interested in对……感兴趣

Most people love animals. Many children's books use animals as the main characters（角色）. Many people look after animals as pets. Do you know {#blank#}1{#/blank#} people enjoy going to zoos? The love for animals may {#blank#}2{#/blank#} the reason.

In the past, zoos were usually started by rich（富有的） people. The {#blank#}3{#/blank#} zoo was started by a queen（王后）in Egypt in 1500 BC．Sadly, the animals in the early zoos were not treated well. They didn't receive（收到）{#blank#}4{#/blank#}attention or care.

Today, zoos still bring people pleasure, {#blank#}5{#/blank#} they try to protect animals and teach people as well. Zoos must follow rules. People must provide animals {#blank#}6{#/blank#} a clean place to live, food and water, and health care. In this way, the rules help protect the animals.

Some people think the {#blank#}7{#/blank#} are not enough. They want to do more to protect the animals they love. For example, people were against the use of some large animals in shows. They thought the zoos didn't have enough {#blank#}8{#/blank#} for the animals to show. With so many people against the shows, the zoos {#blank#}9{#/blank#} to make a change.

People see animals in zoos. At the same time, they try to learn about and protect {#blank#}10{#/blank#}. Both people and animals can get a lot from each other.

In America, there are chores for children of different ages. American people think it's important to tell children their duty in the family. They think that a 2-year-old child is never too young to do chores. If you have no ideas, use this list of age chores for your children.