根据材料内容选择最佳答案。

(  )1. The underlined word “siblings” in Paragraph 1 means “______”.

A. classmates                            B. friends and relatives

C. neighbors                              D. brothers or sisters 04

(  )2. According to Paragraph 2, Nicholas ______.

A. usually takes a shower in the morning

B. wears uniform to school

C. has breakfast at school

D. gets up at 7:45

(  )3. Nicholas goes to school ______.

A. by bike         B. on foot        C. by bus          D. by car

(  )4. On Wednesdays Nicholas goes home late because he ______.

A. takes classes at L.I.P.A

B. goes to the Music Club

C. goes to the Internet Club

D. does homework at school

(  )5. The last paragraph mainly tells us about Nicholas’ ______.

A. school life                            B. interest in music

C. weekend activities                       D. favorite places to go

B

Were dinosaurs (恐龙) warm-blooded or cold-blooded? According to a new study, scientists have found that they were somewhere in the middle. This new study shows that dinosaurs were very different from most of today’s animals that are either warm or cold-blooded.6

“I think we were all surprised by this,” said Felisa Smith from the University of New Mexico. “The idea certainly took some getting used to.”

The last dinosaurs lived on the earth more than 60 million years ago. However, there is always more to discover about these ancient animals. 【0：21•3•7•网】

A study by a team of scientists led by John M. Grady of the university studied many different kinds of dinosaurs in their research. They looked at growth rate (比率), body temperature and body size of different kinds of dinosaurs.

How are warm-blooded animals different from cold-blooded animals? Warm-blooded animals like humans can control their body temperature. They eat a lot, and burn calories (卡路里) quickly. They have a more active lifestyle than cold-blooded animals. While cold-blooded animals such as snakes do not control their body temperature. Instead, they must use sunlight to keep warm, and they move much more slowly. Cold-blooded animals do not need to eat very much. Their bodies slow down in colder temperatures.

Dinosaurs were in the middle because they didn’t completely control their body temperature, but their body temperature didn’t only depend on the environment either. This helped dinosaurs and allowed them to live for so many years.

Besides dinosaurs, there are other animals that are not completely warm-blooded or cold-blooded, such as great white sharks.