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 志愿者日志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 u 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 promi that you will buy me a bike on my birthday?
烤布丁
8．The professor showed evidence that his paper was bad on original rearch.
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 the years.清明前夜打一节日
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 surpri the rearchers. A bird's weight and its wing shape, wind speed and direction, and the purpo 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 s
peed, which had not been expected. The scientist Anders Hedenström expresd surpri 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 ud 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 rearchers' results showed that bigger flocks fly faster no matter what kind of bird species they belong to. Why that's the ca is the next question they hope to answer.
两对半
The rearchers 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 gee 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个人合伙．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用哄堂大笑造句．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．感觉的英文单词Turbulence helps birds maintain higher speed.
D．The goo is the slowest flying bird in the world.
萨菲王朝
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 el. I would be happy and __8__.
Standing in line, I was silently talking to mylf. 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.
