手机APP下载

您现在的位置: 首页 > 托福 > 托福写作 > 托福写作范文 > 正文

TPO4综合写作满分范文

来源:爱思英语网 编辑:Daisy   可可英语APP下载 |  可可官方微信:ikekenet

The professor actually contradicts the statements made in the passage. She is of the view that dinosaurs are not endotherms i.e. they were not able to keep their body temperature at a constant rate.

The professor contradicts the issue of dinosaurs being endotherms based on the availability of fossils being available in the polar regions, she say that the polar regions in those days were not as cold as they are today i.e at least warm enough for dinosaurs to live. During harsh winters she says that there is a possibility of the dinosaurs actually migrating to warmer regions.

The issue of leg position and movement being used as a reason to classify the dinosaurs as endotherms does not please the professor either. She says that dinosaurs had legs under their bodies to support their huge bodies i.e the legs under the body of the dinosaur were actually to

support the huge weight of the dinosaur and not to provide it with a body structure like endotherms(which is actually suited for running).

The professor acknowledges the presence of haversian canals but also points out that that the fossils show the presence of growth rings. These rings occur due to the thickening of the bone.

The thickening indicates that the dinosaurs weren’t actually growing continuously but were experiencing periods of rapid growth and periods of no growth in succession. This pattern. She says is characteristic of non endothermic animals.

Thus it can be inferred that the professor challenges the passage by giving reasons as to why she thinks that the dinosaur is not an endotherm.

作者:陈先忠

重点单词   查看全部解释    
presence ['prezns]

想一想再看

n. 出席,到场,存在
n. 仪态,风度

 
constant ['kɔnstənt]

想一想再看

adj. 经常的,不变的
n. 常数,恒量

联想记忆
characteristic [.kæriktə'ristik]

想一想再看

adj. 特有的,典型的
n. 特性,特征,特

 
classify ['klæsifai]

想一想再看

vt. 分类,归类

联想记忆
harsh [hɑ:ʃ]

想一想再看

adj. 粗糙的,使人不舒服的,刺耳的,严厉的,大约的

 
temperature ['tempritʃə(r)]

想一想再看

n. 温度,气温,体温,发烧

 
issue ['iʃju:]

想一想再看

n. 发行物,期刊号,争论点
vi. & vt

 
available [ə'veiləbl]

想一想再看

adj. 可用的,可得到的,有用的,有效的

联想记忆
pattern ['pætən]

想一想再看

n. 图案,式样,典范,模式,型
v. 以图案

 
movement ['mu:vmənt]

想一想再看

n. 活动,运动,移动,[音]乐章

联想记忆

发布评论我来说2句

    最新文章

    可可英语官方微信(微信号:ikekenet)

    每天向大家推送短小精悍的英语学习资料.

    添加方式1.扫描上方可可官方微信二维码。
    添加方式2.搜索微信号ikekenet添加即可。