4008-125-888
春季班 千元优惠大放送!
首页>托福考试备考专区>TPO写作>托福TPO49综合写作题目+范文PDF下载

托福TPO49综合写作题目+范文PDF下载

2017年08月01日 01:55来源:互联网作者:上海管理员

摘要:上一篇小编更新的是托福TPO49独立写作题目+范文PDF下载 ,接下来小编就为大家带来托福TPO 49托福综合写作题目文本及答案解析,希望能为大家的备考带来帮助。

  上一篇小编更新的是托福TPO49独立写作题目+范文PDF下载 ,接下来小编就为大家带来托福TPO 49托福综合写作题目文本及答案解析,希望能为大家的备考带来帮助。

  托福TPO49综合写作

  阅读文本:

  Like many creatures, humpback whales migrate long distances for feeding and mating purposes. How animals manage to migrate long distances is often puzzling. In the case of humpback whales, we may have found the answer: they may be navigating by the stars, much as early human sailors did. What we know about humpback whales makes this a distinct possibility.

  First, humpback whales seem to be intelligent enough to use stars to navigate by. Whales' brains have a high degree of complexity--a common determiner of intelligence. This suggests that the whales' brain power far exceeds that of most other animals. The whales' well-developed cognitive ability seems to provide a sound basis for the ability to use a complex, abstract system of sensory stimuli such as the night sky for orientation.

  Second, humpback whales migrate in straight lines. Animals can maintain movement in a straight direction for long distances only if they orient themselves by some external objects or forces. Many birds and other terrestrial creatures, for example, use physical landmarks to help them stay on track as they migrate. Whales, which swim in the open ocean, cannot rely on land features; they could, however, rely on stars at night to provide them with external signs by which to maintain direction over long distances.

  Third, humpback whales exhibit an unusual behavior: they are sometimes observed floating straight up for minutes at a time, their heads above the water as though they were looking upward. The behavior is known as spy-hopping, and it is very rare among marine animals. One explanation for the function of spy-hopping is that the whales are looking at the stars, which are providing them with information to navigate by.

  听力文本:

  Professor:

  The theory that humpback whales use the stars to navigate the open seas is a fascinating one, but the evidence supporting the theory is not very convincing.

  First, there doesn’t seem to be any real connection between intelligence and an animal's ability to use stars for navigation. You know, there are other animals that use stars to navigate. Some birds have this ability, like ducks for example. Now the general cognitive ability of ducks is only average. They are not highly intelligent. The fact that the ducks evolved the ability to use stars for navigation does not seem to have much of a connection to their overall intelligence. It's just an instinct they were born with, not a sign of intelligence. So the fact that humpback whales happen to be intelligent does not make them particularly likely to use stars for navigation. The two things just don't seem to be connected.

  Second, there may be a different explanation for the humpback whale’s ability to navigate in straight lines. Remember that for animals to be able to do this, they have to sense some external object or force. Well, the external force the whales could be sensing is Earth’s magnetic field. Humpback whales have a substance in their brains called biomagnetite. Generally, the presence of biomagnetite in an animal’s body makes that animal sensitive to Earth’s magnetic field. The fact that there’s biomagnetite in the brains of humpback whales suggests that they orient themselves by the magnetic field rather than the stars when they migrate.

  Third, spyhopping probably has nothing to do with looking at stars. Spyhopping is rare, but there are other animals that exhibit it. Some sharks do it, for example. But sharks don't migrate or look at stars. Sharks spyhop to look for animals they want to hunt. And another thing, humpback whales often spyhop during the day, when no stars can be seen. So to suggest that the function of spyhopping is to look at stars is pure speculation.

  范文:

  In the reading passage, the author states that humpback whales may navigate by stars to migrate long distances. However, the professor refutes this idea and thinks the reasons listed in the reading are unconvincing.

  First of all, the author claims that humpback whales are intelligent enough to navigate by stars, while the professor states that there is no correlation between intelligence and an animal’s ability to use stars for navigation. For example, some birds such as ducks evolved the ability for navigation by stars. And ducks are only of general cognitive ability, not as advanced as humpback whales’. So, it seems that there is no real connection between intelligence and the ability to use stars for navigation.

  In addition, the author argues that humpback whales have no land features in the ocean to help them migrate in straight lines for long distance. So, they have to rely on stars. However, the professor challenges this statement by pointing out that the presence of biomagnetite in the brains of humpback whales enables them to be sensitive to Earth’s magnetic field. It is Earth’s magnetic field that helps humpback whales to migrate.

  Finally, the professor cast doubt on what is stated in the reading that humpback whales look at the stars through spy-hopping, which is a rare behavior among marine animals. He claims that there is no connection between spy-hopping and looking at stars since there are other animals exhibit this behavior but do not migrate, such as sharks. Also, humpback whales do spyhop during the day when there are no stars can be seen in the sky. So, the statement that humpback whales adopt spyhopping to look at stars is not convincing.

上海新航道培训

上海新航道培训

上海新航道培训

免费领取资料

免费领取最新剑桥雅思、TPO、SAT真题、百人留学备考群,名师答疑,助教监督,分享最新资讯,领取独家资料。

方法1:扫码添加新航道老师

微信号:shnc_2018

方法2:留下表单信息,老师会及时与您联系

热门课程

  • 走读班(6-10人)
  • 走读班(20-30人)
  • 住宿班(6-10人)
  • 住宿班(20-30人)
  • 托福一对一
课程名称 班级人数 课时 学费 报名
托福基础走读班(6-10人,争85/90分) 6-10人 144课时 ¥29800 在线咨询
托福长线走读班(6-10人,争100/110分) 6-10人 240课时 ¥45800 在线咨询
托福全程走读班(6-10人,争100/110分) 6-10人 192课时 ¥39800 在线咨询
托福强化走读班(6-10人,争85/90分) 6-10人 96课时 ¥24800 在线咨询
托福十一特训班 6-10人 56 ¥15800 在线咨询
课程名称 班级人数 课时 学费 报名
托福全程走读班(20-30人,争100/110分) 20-30人 192课时 ¥13800 在线咨询
托福强化走读班(20-30人,争85/90分) 20-30人 96课时 ¥7800 在线咨询
托福冲刺走读班(20-30人,争100/110分) 20-30人 96课时 ¥8800 在线咨询
课程名称 班级人数 课时 学费 报名
托福基础住宿班(6-10人,争85/90分) 6-10人 144课时 ¥28800 在线咨询
托福全程住宿班(6-10人,争100/110分) 6-10人 304课时 ¥41800 在线咨询
托福长线住宿班(6-10人,争100/110分) 6-10人 380课时 ¥46800 在线咨询
托福词汇语法住宿班(6-10人) 6-10人 48课时 ¥8800 在线咨询
托福精听精读住宿班(6-10人) 6-10人 48课时 ¥8800 在线咨询
课程名称 班级人数 课时 学费 报名
托福全程精讲住宿班(20-25人,争100/110分) 20-30人 192课时 ¥15800 在线咨询
托福基础强化住宿班(20-30人,争85/90分) 20-30人 96课时 ¥8800 在线咨询
托福精品冲刺住宿班(20-30人,争100/110分) 20-30人 96课时 ¥9800 在线咨询
课程名称 班级人数 课时 学费 报名
托福一对一 1 按需定制 在线咨询
托福精听精读十一特训班 在线咨询

免责声明
1、如转载本网原创文章,请表明出处;
2、本网转载媒体稿件旨在传播更多有益信息,并不代表同意该观点,本网不承担稿件侵权行为的连带责任;
3、如本网转载稿、资料分享涉及版权等问题,请作者见稿后速与新航道联系(电话:021-64380066),我们会第一时间删除。

  • 徐家汇校区
  • 人民广场校区
  • 八佰伴校区
  • 中山公园校区
  • 杨浦校区
  • 闵行校区
  • 松江校区
  • 封闭学院
  • 地址:徐汇区裕德路126号

    乘车路线:地铁1、4号线上海体育馆、3号线9号线宜山路站、11号线上海游泳馆站

  • 地址:南京西路338号天安中心22楼

    乘车路线:地铁1、2、8号线人民广场站

  • 地址:张杨路620号中融恒瑞国际大厦东楼22层2202室

    乘车路线:地铁2、4、6号线世纪大道站

  • 地址:长宁路1158号 贝多芬广场 4楼414室

    乘车路线:乘车路线:地铁3、4号线中山公园站

  • 地址:杨浦区国宾路18号万达广场A座18楼

    乘车路线:地铁10号线五角场站

  • 地址:东川路1779-19号

    乘车路线:地铁5号线 东川路站4号口出

  • 地址:松江区龙腾路58弄32号

    乘车路线:地铁9号线松江大学城站下

  • 地址:上海市浦东新区惠南镇拱极路2151号

    乘车路线:地铁16号线惠南站

  • 微信公众号
  • 微信社群

注册/登录

+86
获取验证码

登录

+86

收不到验证码?

知道了

找回密码

+86
获取验证码
下一步

重新设置密码

为您的账号设置一个新密码

保存新密码

密码重置成功

请妥善保存您的密码
立即登录

为了确保您的帐号安全

请勿将帐号信息提供给他人/机构