跟踪导练（五）4

阅读理解

The secret of carrier pigeons unbelievable ability to find their way home has been discovered by scientists： the feathered navigators follow the roads just like we do.

Scientists now believe the phrase “as the crow flies” no longer means the shortest most direct route （路线） between two points. They say it is likely that crows and other day birds also choose AA-suggested routes， even though it makes their journeys longer.

Scientists at Oxford University spent 10 years studying homing pigeons using global positioning satellite （GPS） and got a surprising result. The birds often dont use the sun to decide their directions.

Instead they fly along motorways， turn at the crossing and even go around roundabouts （绕道）， adding miles to their journeys.

“It really has knocked our research team sideways to find that after a decade-long international study， pigeons appear to ignore their inbuilt directional instincts （本能） and follow the road system，” said Prof Tim Guilford， reader in animal behavior at Oxford Universitys Department of Zoology.

Guilford said pigeons use their own navigational system （导航系统） when doing long distance trips or when a bird does a journey for the first time.

“But once homing pigeons have flown a journey more than once， they can fly home on a habitual route， much as we do when we are driving or walking home from work，” said Guilford.

“In short， it looks like it is mentally easier for a bird to fly down a road. They are just making their journey as simple as possible.”

1. What does the underlined part “the feathered navigators” refer to？

A. The crows. B. The pigeons.

C. Day birds. D. Animals that can fly.

2. Scientists used to think that homing pigeons often find their directions ___ .

A. by the sun B. by following other birds

C. by the road system D. by global positioning satellite

3. Why do homing pigeons usually follow the road system during the journey？

A. Their own navigational system doesnt work.

B. Its easier to make a journey simple by doing so.

C. Its too hard to use their own navigational system.

D. They dont have their inbuilt directional instincts now.

4. What should be the best title for the text？

A. How Birds Follow the Road System？

B. Why Pigeons Can Fly Long Distance？

C. How Pigeons Find Their Ways Home？

D. Why Crows Fly the Shortest Distance？

语法填空

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Once a year， a race is held for old cars. A lot of cars entered for this race last year and there was a great deal of 1 （excite） just before it began. One of the most handsome cars was a Rolls-Royce Silver Ghost. The most unusual car was a Benz 2 had only three wheels. 3 （build） in 1885， it was the oldest car

4 （take） part. After a great many loud explosions （轰响）， the race began. Many of the cars 5 （break） down on the way， so some drivers spent 6 （much） time under their cars than in them！ A few cars， 7 ， completed the race. The winning car reached a speed of forty miles an hour—much faster than any of 8 （it） rivals （对手）. It sped downhill at the end of the race and the driver had a lot of trouble trying 9 （stop） it. The race gave everyone a great deal of pleasure. It was very different 10 modern car races but no less exciting.

1. 2. 3. 4. 5.

6. 7. 8. 9. 10.

书面表达

假设你是李华，你的笔友Jane最近总是感觉身体不适，因此写信向你询问如何保持健康。请你根据以下要点提示给她回信，要点提示：

1. 合理饮食；

2. 锻炼身体；

3. 保证充足睡眠。

注意：

1. 词数100左右（信的开头和结尾已给出，不计入总词数）；

2.可适当增加细节，以使行文连贯。

Dear Jane，

Im sorry to hear that you are not very well these days.

Best wishes.

Yours sincerely，

Li Hua