题目内容
valley A. vocabulary B. attraction C. many D. cave
A
【解析】
试题分析：valley [æ]; vocabulary[æ]; attraction [ə]; many [e]; cave [eɪ]。只有选项A与所给单词中字母a发音一样，故选A。
考点：考查字母a在单词中的读音。
Although April did not bring us the rains we all hoped for, and although the Central Valley doesn’t generally experience the sound and lightning that can go with those rains, it’s still important for parents to be able to answer the youthful questions about thunder and lightning.
The reason these two wonders of nature are so difficult for many adults to explain to children is that they are not very well understood by adults themselves. For example, did you know that the lightning we see flashing down to the earth from a cloud is actually flashing up to a cloud from the earth? Our eyes trick us into thinking we see a downward motion when it’s actually the other way around. But then, if we believed only what we think and we see, we’d still insist that the sun rises in the morning and sets at night.
Most lightning flashes take place inside a cloud, and only a relative few can be seen jumping between two clouds or between earth and a cloud. But, with about 2,000 thunderstorms taking place above the earth every minute of the day and night, there’s enough activity to produce about 100 lightning strikes on earth every second.
Parents can use thunder and lightning to help their children learn more about the world around them. When children understand that the light of the lightning flashing reaches their eyes almost at the same moment, but the sound of the thunder takes about 5 seconds to travel just one mile, they can begin to time the interval (间隔) between the flash and the crash to learn how lose they were to the actual spark (闪光).
【小题1】According to the author, in the area of the Central Valley____.
| A．rains usually come without thunder and lightning. |
| B．it is usually dry in April |
| C．children pay no attention to the two natural wonders. |
| D．parents are not interested in thunder and lightning. |
| A．we were taught so by our parents from our childhood. |
| B．we are taken in by our sense of vision. |
| C．it is a common natural sight. |
| D．it is a truth proved by science. |
| A．Only a small number of lightning flashes occur on earth. |
| B．Lightning flashes usually jump from one cloud to another. |
| C．Lightning travels 5 times faster than thunder. |
| D．There are far more lightning strikes occurring on earth than we can imagine. |
| A．cloud | B．lightning strikes | C．lightning flashes | D．thunderstorms |
| A．we should not believe what we see or hear. |
| B．things moving downward are more noticeable. |
| C．people sometimes may have wrong ideas about ordinary phenomena. |
| D．adults are not as good as children in observing certain natural phenomena. |
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 are 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 . The guide will tell you about the lives of 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
【小题1】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. |
| A．Black Bear Count | B．Garland Valley |
| C．Flashlight Adventure | D．None of the trips |
| A．Good walking shoes | B．A pair of glasses |
| C．Food and water | D．A sleeping-bag |
| A．Bring your drink and lunch for this walk. |
| B．Many of the animals you will see on this trip . |
| C．The guide will tell you about the lives ofthe animals you see. |
| D．There is no need to book early. |
| 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 |