高中英语人教版必修3课时作业：Unit 5 Canada—“The True North” 20含答案

- 1 - 课时作业(二十) Unit 5 Canada—“The True North”

Section Ⅳ Grammar—同位语从句

Ⅰ.单句语法填空

1．He got the news from Mary that the meeting had been called off.

2．I have no idea why Tom got so much money overnight.

3．My best friend asked me the question whether that novel was worth reading.

4．I have no idea where the journalist could have got his information from.

5．A warm thought suddenly came to me that I might use the pocket money to buy

some flowers for my mother's birthday.

6．The fact that our city can become better in every field is clear.

7．Do you still remember your promise that you will buy me a bike on my birthday?

8．The professor showed evidence that his paper was based on original research.

9．The manager didn't answer the question who would take his place.

10．The fact has worried many scientists that the earth is becoming warmer and

warmer these years.

Ⅱ.阅读理解

It might be easy to imagine that the more crowded a bird flock (群) becomes, the

slower the birds fly. But it has been proven that the bigger a bird flock becomes,

the faster the birds will fly. The discovery was made by scientists from Sweden's

Lund University. They took a look at the flying speed of birds in an effort to find

what influenced how fast they would fly.

Most of the findings didn't surprise the researchers. A bird's weight and its

wing shape, wind speed and direction, and the purpose of the flight all indeed

influenced its flying speed. But the scientists found that the size of the flock had

a strong effect on the flying speed, which had not been expected. The scientist Anders

Hedenström expressed surprise at the discovery as it has usually been ignored in

studies on birds.

Anders Hedenström and his partner Susanne Akesson collected their data on Sweden's

Öland Island. There they studied birds' physical characteristics (特征), counted

flock populations, and recorded their speeds during flying. To know the birds' speed

while flying, they used a tool that can also gauge important characteristics of wind,

including speed and direction. They were able to measure the speed of different kinds

of large flocks. The researchers' results showed that bigger flocks fly faster no

matter what kind of bird species they belong to. Why that's the case is the next

- 2 - question they hope to answer.

The researchers also said that large flocks are made up of larger­sized birds,

which move at faster speeds than smaller birds. In a large flock, it is easier to

take advantage of the turbulence (湍流) that occurs behind other birds, especially

when flying in formation (队形), like geese and other birds do. Using the turbulence

makes it easier to maintain higher speed.

【文章大意】 原本人们认为鸟群的数目越大，就会飞的越慢，而最新的研究却得出了完全相反的结果。这是为什么呢？

1．What does Paragraph 1 mainly tell us?

A．The bigger the bird flock is, the faster the birds fly.

B．The bigger the bird flock is, the slower the birds fly.

C．What affects birds' flying speed didn't interest people.

D．There was no further progress in studying birds' flying speed.

解析：A 段落大意题。根据第一段的内容可知，最新的研究表明：并非鸟群的数目越大，飞行速度越慢，而是恰好相反。

2．What does the underlined word “gauge” in Paragraph 3 probably mean?

A．Measure. B．Affect.

C．Change. D．Control.

解析：A 词义猜测题。根据划线词后面的They were able to measure the speed of

different kinds of large flocks.可知，gauge意为“测量”。

3．What can be learned from the last paragraph?

A．Birds are natural­born flyers.

B．Bigger birds fly slower than smaller ones.

C．Turbulence helps birds maintain higher speed.

D．The goose is the slowest flying bird in the world.

解析：C 推理判断题。根据最后一段的内容可知，鸟类可以利用大气湍流维持飞行速度。

Ⅲ.完形填空

It was raining outside and I was preparing my breakfast at home. __1__， a bottle

of orange juice slid (滑) from my hand and fell to the floor. Glass and juice __2__

everywhere. I looked at the __3__. Then my eyes were filled with tears. They came

from a(n) __4__ acceptance that “Today is just not my day”．

It was a bad day for me __5__ things had to be done. I drove into town. In the

few minutes it took to the bank, I made a __6__. Though I had a bad day, I would be

__7__ not to pass it to anyone else. I would be happy and __8__.

- 3 - Standing in line, I was silently talking to myself. For the __9__ time that day

my eyes were filled with tears as I __10__ how disconnected (隔离的) I felt from others.

Then a __11__ drew my attention. “Young lady，” she was saying.

I __12__ and saw the bank teller, an old lady with a gentle smile. Her eyes showed

__13__ as she softly said, “I don't __14__ what is happening inside of you, but please

believe me when I tell you that everything will be okay.”

And then she did something quite __15__. My hands were resting on the counter