18. Which of he following is NOT mentioned about scientists in earlier times?

　 A. They falsely declared to know all about nature.

　 B. They did not believe in results from scientific observation.

　 C. They paid little attention to the problems they didn’t understand.

　 D. They invented false rules to explain things they didn’t understand.

17. It can be inferred from the passage that scientists of the 18^th century _________.

A. thought that they knew a great deal and could deal with most problems of science

B.　 knew that they were ignorant and wanted to know more about nature

C. were　 afraid of facing up to the realities of　 scientific research.

D. did more harm than good in man’s understanding nature

16. According to the writer, really good science_____________.

A. would surprise the brightest minds of the 18^th 　century.

B. will help people to make the right choice in advance.

C. will produced results which can be predicted

D. will bring about disturbing results

15. What is the best title for the passage?

　　 A. Adventure Travel in America

　　 B. Hunting around the Great Mountains

C Interesting Trips in the East of the USA

D. Discovery Trips in the Blue Mountains

E

It is hard to predict (预言 ) how science is going to turn out , and if it is really good science, it is impossible to predict. If the things to be found are actually new, they must be unknown in advance You cannot make choices on this matter. You either have science or you don't and if you have it you have to accept the surprising and disturbing pieces of information, along with the neat and useful bits.

The only solid piece of scientific truth about which I feel totally confident is that we don’t know enough about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It is, in its way, a clear piece of news. It would have amazed the brightest minds of the 18th century to be told by any of us how little we know and how strange seems the way ahead . In earlier times, they either pretended to understand how things worked or simply made up stones to give answers. Now that we have begun exploring seriously, we are catching sight of how huge the questions are, and how far from being answered. Because of this, we are sorry. It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted.

But we are making a beginning, and there ought to he some satisfaction. There are probably no questions we can think up that can’t he answered, sooner or later. Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, arid pay attention.

14. Which of the following is NOT necessary for the three trips?

　　 A. Good walking shoes.　　　　 B A pair of glasses.

　　 C. Food and water.　　　　 D. A 　 sleeping-bag

13. On which trip might you see animals that sleep during the day?

　　 A. Black Bear Count.　　　　　 B. Garland Valley.

　　 C. Flashlight Adventure.　　　 D. None of the trips.

12. Where are these trips?

　　 A. In a large city. 　　　　　　　 B. In a park in the mountains.

　　 C. In a special kind of zoo.　　　 D. In three different countries.

11. According to the passage, which of the following Statements about advertisements is NOT true?

A.　 The sponsors are always mentioned.

B.　 Advertising must he honest and humorous *

C.　 There is the description of things advertised

D. Advertising is meant for large groups of people.

D

Trip 1 Black Bear Count

There have been fires in this area in the last few years and the Office of the National Park is not sure how many black bears air still living. Some bears have been seen since the fires, and the Office has asked for young people to help count them. The entire trip will last three hours. Bookings necessary.

Cost: Free　　　　　　　　　　　　 When: May 8

Trip 2 Garland Valley

Bring your drink and lunch for this walk in a beautiful area of the Blue Mountains. Garland Valley is close to the town of Garland hut is part of the National Park. Many wild animals live in this area, including many rare birds. This is a great walk for bird-lovers. The trip lasts four hours. Bookings necessary.

Cost: $ 15　　　　　　　　　　　　 When: May 8, May 15

Trip 3 Flashlight Adventure

Put on your warm clothes, bring a flashlight and a pair of glasses, and come for a night walk along the Dungog Valley. A guide will lead the tour. Many of the animals you will see on this trip can only he. seen at night. The guide will tell you about the lives _0f the animals you see. Numbers are strictly limited on night trips, so be sure to book early. This walk lasts two and a half hours.

Cost: $ 12　　　　　　　　　　　　 When: May 8, May 15, May22

Equipment to be needed:

• Please bring enough water and food for all walks.

• Wear good walking shoes-no high heels.

• Wear a hat for day walks.

• Dress warmly for night walks.

• Children must be with an adult.

• Make sure your flashlight works well and bring extra batteries for night walks.

• Follow all instructions from guides during the walks. The mountains are a dangerous place.

Bookings:

• Bookings for the above trips can be trade by telephone (893 - 4847) or on the Internet at www. Bluemountaintour. com

10. Which of the following is considered modern mass media?

　　 A. Newspapers.　 B. Emails.　　　　 C. Magazines.　　 D. Films.

9.　 The passage seems to say that different ideas of advertising are given due to

　　 A. the change ₀f time　　　　　　　 B. the subject of the advertisements

　　 C. people's age difference　　　　　 D. peoples different opinions