IMG-LOGO

Câu hỏi:

22/07/2024 224

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the question.

All living cells in an animal's body require energy to power the various chemical processes going in inside them. This energy is ultimately supplied by the food that animals eat. These chemical processes are collectively referred to as metabolism, and one of the byproducts of metabolism is heat. Metabolic rates vary significantly between species. Warm-blooded animals (birds and mammals) have metabolic rates about five to ten times higher than those of similarly sized cold-blooded ones (reptiles, amphibians, and fishes). And it is precisely because birds and mammals have such high metabolic rates that they are able to keep their bodies warm.

The terms warm-blooded and cold-blooded are still in everyday use, but they are not entirely precise. Anyone who has handled a snake knows this because a snake’s body actually feels quite warm. But very little of the snake’s body heat originates internally, from its cells, most of it having been supplied from the outside, either by the sun or by a heat lamp. Instead of referring to reptiles as cold-blooded, they are best described as ectothermic, meaning “outside heat”. Similarly, birds and mammals are said to be endothermic, meaning “inside heat”.

There are advantages and disadvantages to each thermal strategy. Reptiles are usually sluggish first thing in the morning, their body temperatures having dropped during the cool of the night. Accordingly, they have to bask in the sun to raise their body temperatures, but once they have warmed up sufficiently, they can go about their business. By altering between the sun when they are too cool, and the shade when they are too warm, many reptiles are able to maintain their body temperatures at optimum levels of about 95°F or more. Endotherms, on the other hand, maintain temperatures of about 98°F all the time, so they are always ready for action.

I used to keep a crocodile. He had very sharp teeth, and I had to be careful how I handled him during the daytime, when he was warm. But I could do whatever I wanted at night, when he was cold, without any fear of being bitten. The obvious disadvantage of being ectothermic is that the animal’s activity levels are dependent upon the environment. But its low metabolic rates mean that it requires far less food, which is an advantage. I used to feed the crocodile a tiny piece of liver once a week, while the family cat demanded three meals every day. We should therefore not think that reptiles are inferior to mammals and birds; they are just different

What is the best title of the passage? 

A. Birds and Mammals 

B. Endotherms and Ectotherms

Đáp án chính xác

C. Advantages of Entothermism 

D. Common Misconceptions about Reptiles 

Trả lời:

verified Giải bởi Vietjack

Chọn B

Kiến thức: Đọc hiểu

Giải thích:

Tiêu đề hay nhất cho bài đọc là gì?

  A. Loài chim và động vật có vú                 

B. Động vật đẳng nhiệt và động vật biến nhiệt

  C. Lợi thế của việc đẳng nhiệt                   

D. Quan niệm sai phổ biến về loài bò sát

Câu trả lời này có hữu ích không?

0

CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1:

The captain has not decided yet where to stop on the journey – we’ll just play it by_______ and see how we feel

Xem đáp án » 18/06/2021 3,509

Câu 2:

What is most striking is that most authors made_______ efforts to secure proper authorization for their works

Xem đáp án » 18/06/2021 1,994

Câu 3:

“Who volunteered to pick up the refreshments for today’s meeting?” – “ ________”

Xem đáp án » 18/06/2021 1,434

Câu 4:

Two school boys are talking to each other.

Harry: “Were you chosen for our school football team?

Porter: “_______” 

Xem đáp án » 18/06/2021 975

Câu 5:

Amazon.com, Inc, is an America multinational technology company based in_______ Seattle, Washington that focuses on_______ e- commerce, cloud computing, and artificial intelligence

Xem đáp án » 18/06/2021 802

Câu 6:

Just after the play started there was a power failure

Xem đáp án » 18/06/2021 754

Câu 7:

We’ve had a burglar alarm installed in our holiday cottage _______we will feel happier about leaving it unoccupied for long periods

Xem đáp án » 18/06/2021 715

Câu 8:

_______, the would-be thief made quite a commotion, which alerted the soldiers who then arrested the man

Xem đáp án » 18/06/2021 710

Câu 9:

The receptionist didn’t know_______ whom the message was intended

Xem đáp án » 18/06/2021 672

Câu 10:

The committee, in an earlier report, was accused of sweeping financial problems under the carpet to avoid embarrassment

Xem đáp án » 18/06/2021 658

Câu 11:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the each of the questions.

Unlike previous generations, millennials look further than job stability, competitive salaries and benefits to be committed and loyal to a company. They are driven by a sense of shared purpose, (25) _______ means they need to have a strong sense of their part in the „bigger picture’ to bring their best results to the workplace. And (26) _______ until now businesses are mostly focused on (27) _______ key consumer needs, what becomes clear when examining the global workforce trends by 2020 is that employee experience is equally important for company success . This is easily seen in a number of tech giants and industry leaders like Google, Facebook, SAP, Tumblr, Intuit, and others. These brands build their entire (28) ______structure and organizational ethos around the experience of their employees. State-of-the-art office campuses, flexible hours and resting rooms are only some of the methods these enterprises leverage to keep their employee experience great. And more importantly, all of these are fast becoming the norm in (29) _______ to today’s workplace trends for companies that understand millennials and know that the 2020 workplace needs to be more dynamic, purpose-driven and versatile

Điền ô 27

Xem đáp án » 18/06/2021 646

Câu 12:

Choose the word or phrase OPPOSITE in meaning to the underlined part in each of the following sentences

Work efficiency has increased appreciably each year thanks to computers and their ability to multitask

Xem đáp án » 18/06/2021 581

Câu 13:

Ants were the first group of eusocial predatory insects (A) that both (B) lived and foraged primarily (C) in the soil and in rotting vegetation (D) on the ground

Xem đáp án » 18/06/2021 578

Câu 14:

Once_______ with the latest technology, many vehicle manufacturing factories are believed to reduce emissions of nitrogen oxides (NOx) drastically

Xem đáp án » 18/06/2021 567

Câu 15:

There are two major factors_______ this decrease in the number of students_______ an MBA degree in their countries today

Xem đáp án » 18/06/2021 513

Câu hỏi mới nhất

Xem thêm »
Xem thêm »