单选题The skulls and pelvic bones of some species of dinosaur share characteristics with the skulls and pelvic bones of all modern birds. Even though not all dinosaurs have these characteristics, there are scientists who claim that all animals that do have t

题目
单选题
The skulls and pelvic bones of some species of dinosaur share characteristics with the skulls and pelvic bones of all modern birds. Even though not all dinosaurs have these characteristics, there are scientists who claim that all animals that do have these characteristics are dinosaurs.  If the statements above and the claim of the scientists are true, which of the following must also be true?
A

Birds share more characteristics with dinosaurs than they do with other animals.

B

Some ancient dinosaurs were indistinguishable from modern birds.

C

All animals whose skulls share the characteristics of those of modern birds also have pelvic bones that are similar to those of modern birds.

D

Modern birds are dinosaurs.

E

All dinosaurs are birds.

参考答案和解析
正确答案: E
解析:
由文段可知,科学家根据一些恐龙的头盖骨和骨盆骨与所有现代鸟类的头盖骨和骨盆骨有许多相同特征,得出结论:所有具有这些特征的动物是恐龙,如果这个推理是正确的话,我们可以认为现代鸟类是恐龙,故本题选D项。
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相似问题和答案

第1题:

阅读理解There is no doubt that man is a member of the animal kingdom.Anyone who has thought about this fact seriously must have wondered how it has come about that man has achieved a position so supreme(最高的) among the myriad(无数的) kinds of animal life.Two characteristics of man, in comparison with all other animals, that stand out above all others are the creation and use of tools and the development and use of language.Since no other animals have achieved these abilities, it must be assumed that man’s evolutionary development led to his capacity to create and use tools and to devise and use language.

Once these abilities and practices evolved, they probably became driving forces in the further evolution of man.Those members of the species who become most proficient(精通的) in the fabrication of tools and in the command of language and thought would tend to survive and maintain their kind for good, at the expense of those of lesser ability.

11.Which of the following statements best expresses the main idea of the passage?()

A.Tools and language are either the effects or the causes of human evolution.

B.No other animals have achieved human abilities.

C.Among the animals, only man is able to use tools and language.

D.Man owns his capacity to making use of tools and language.

12.“Animal kingdom” in the passage refers to ().

A.the place where all animals live

B.the animal society

C.all kinds of animals, including man

D.the forest with animals

13.One important condition for man’s evolution is() .

A.the animal kingdom

B.a supreme position

C.the myriad kinds

D.his natural capacity

14.The phrase “come about” in the passage is likely to mean ________.

A.happened

B.appeared

C.arrived

D.succeeded

15.The last sentence suggests that() .

A.those of lesser ability would be very expensive

B.in order to survive, man has to sacrifice some other animals

C.those who become proficient in making tools can speak well

D.language and thought could be acquired by man


参考答案:ACDAB

第2题:

What are the right reasons to explain why not the guests enjoy the meal?

A、because they don't have what they actually want

B、no beautiful young ladies showed up

C、steamed fish with all the little bones left in

D、too many children making noises


参考答案:AC

第3题:

Well, _______, he shouldn't even have been driving my car.

(A)in short

(B) to begin with

(C) after all

(D) at all


正确答案:B
解答参考:B此题考察词组用法,A为简而言之,B为首先,C为毕竟,D为根本【译文】那么,首先,他根本就不该一直开我的车。

第4题:

--I′m sorry I didn′t do a good job.
--Never mind. ___________, you have triedyour best.

A.Above all
B.In all
C.At all
D.After all

答案:D
解析:
考查介词短语辨析。句意为“——抱歉,我没有做好工作。——没关系,_________你已经尽力了”。above all“首先,最重要的是”;in all“合计,总共”;at all常用于否定句,表示“根本,丝毫”;after all“毕竟”。 D项最符合句意,故选D。

第5题:

More psychologists have found that all caregivers share a common characteristic:All caregivers believe that they are the best people for the job.In other words,they all felt that they could do the job better than anyone else.Social workers______caregivers to find out why they took on the responsibility of caring for an eldery,dependent relative.

A.questioned
B.interviewed
C.inquired
D.interrogated

答案:B
解析:
interview“面谈,面试,访问”,其他的词与句意不符。

第6题:

_______ I want to do is to have a good rest after such a long trip.

A.that

B.All what

C.which

D.All


参考答案:D

第7题:

What a waste! Why do you () the water () all the time ?

A、have…flowing

B、have…flow

C、have…to flow

D、have…flowed


参考答案:A

第8题:

What, then, is a good education at the end of the twentieth century? Some educators suggest that it should include foreign languages and the study of foreign cultures;a mastery of English, including the ability to write and speak well, because communications have become all-important in the modern world. and also because “a person who doesn't speak and write Clearly doesn't reason clearly either” ; some knowledge of the social sciences(sociology, psychology)that deal with human relations and human problems;some basic knowledge of modem information systems, since the educated professionals of tomorrow will have to understand their machines. Is that all? “No, of course not. ”answer the educators, “We have not mentioned the two great building blocks of education:history and literature!”

Is this truly the best modern education? Perhaps. But every educator would add or subtract a few subjects. And no matter what list of courses would be offered, it would not be approved by all. Not only do the professors have their own ideas on the matter, but the students have theirs' too. “I don't believe, ”protested a Harvard student when his university revised its programs, “I don't believe that colleges have the fight to define what an educated person is. ”But then, who has?


正确答案:
那么什么是20世纪末的良好教育呢?有些教育家提出应包括外国语言和文化的研究;掌握好英语,包括写和说的能力。因为交流已成为现代世界最重要的事情,而且也因为“一个说不清楚、写不明白的人也不会清晰地思考”。还要有一些处理人的关系和人类问题的社会科学知识(社会学、心理学),一些现代信息系统的基本知识,明天的受过教育的专业人员必须懂得他们的机器(电脑)。是不是就这么多了呢?“不是,当然不是,”教育学家们答道,“我们还没有提到教育的两大块积木:历史和文学呢!”
这果然是最好的现代教育吗?也许是吧。但每个教育学家总会加上或减去几门学科,不管拿出一个什么样的课程表来,总不会得到每一个人的认可,对这件事不仅教授们有自己的看法,而且学生也有自己的想法。哈佛大学修改授课计划时,该校有一个学生抗议说:“我认为学校无权下定义来规定什么人才是受过教育的人。”然而,谁有呢?

第9题:

There are two general approaches to attacking a (1)encryption scheme.The first attack is known as cryptanalysis.Cryptanalytic attacks rely on the nature of the algorithm plus perhaps some knowledge of the general characteristics of the ( ) or even some sample plaintext- ciphertext pairs. This type of ( ) exploits the characteristics of the algorithm to attempt to deduce a specific plaintext or to deduce the key being used. If the attack succeeds in deducing the key, the effect is catastrophic: All future and past messages encrypted with that key are compromised. The second method, known as the ( )-force attack, is to try every possible key on a piece of ( ) until an intelligible translation into plaintext is obtained. On average, half of all possible keys must be tried to achieve success.

(1)处应选________.


A. stream
B.symmetric
C. asymmetric
D.advanced

答案:B
解析:

第10题:

We can't tell you the results until we have looked at()

  • A、all the datum
  • B、the all data
  • C、all the data
  • D、the all datum

正确答案:C

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