单项选择题

史密斯：根据《国际珍稀动物保护条例》的规定，杂种动物不属于该条例的保护对象。
《国际珍稀动物保护条例》的保护对象中包括赤狼。而最新的基因研究技术发现，一直被认为是纯种物种的赤狼实际上是山狗与灰狼的杂交种。由于赤狼明显须要保护，所以条例应当修改，使其也保护杂种动物。
张大中：您的观点不能成立。因为如果赤狼确实是山狗与灰狼的杂交种的话，那么，即使现有的赤狼灭绝了，仍然可以通过山狗与灰狼的杂交来重新获得它。
以下哪项最为确切地概括了张大中与史密斯争论的焦点？（）

A．赤狼是否为山狗与灰狼的杂交种。
B．《国际珍稀动物保护条例》的保护对象中，是否应当包括赤狼。
C．《国际珍稀动物保护条例》的保护对象中，是否应当包括杂种动物。
D．山狗与灰狼是否都是纯种物种。

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SECTION B PASSAGESDirections: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.听力原文： Welcome to Everglade's National Park. The Everglade is a watery plain covered with saw-grass that's the home to numerous species of plants and wild life. And one and half million acres is too big to see it all today. But this tout will offer you a good sampling. Our tour bus will stop first at Tailor Slue. This is a good place to start because it is home to many of the plants and animals typically associated with the everglade. You'll see many exotic birds and of course a world famous alligators. Don't worry. There's a boardwalk that goes across the marsh, so you can look down at the animals in the water from a safe distance. The boardwalk is high enough to give you a great view of the saw grass prairie. From there we'll head at some other marshy and even jungle—like areas that feature wonderful tropical plant life. For those of you who'd like a close view of the saw grass prairie, you might consider running a canoe sometime during your visit here. However, don't do this unless you have a very good sense of direction and can negotiate your way through tall grass. We hate to have to come looking for you. You have a good fortune of being here in the winter, the best time of the year to visit. During the spring and summer the mosquitoes will just about to eat you alive. Right now, they are not so bothersome, but you'll soon want to use an insect repellent.What is the main purpose of the tour?A．To inform. visitors of the park's history.B．To provide an overview of the park's main attractions.C．To show visitors remote places in the park.D．To teach visitors how best to photograph wildlife.
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听力原文：
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单项选择题
听力原文： Today we are going to practice evaluating a main tool used when addressing groups—the voice. There are three main elements that combine to create either a positive or negative experience for listeners. They can result in a voice that is pleasing to listen to and can be used effectively. Or they can create a voice that doesn't hold attention. Or even worse, causes an adverse reaction. The three elements are volume, pitch and pace. When evaluating volume, keep in mind that a good speaker will adjust to the size of both the room and the audience. Of course, with an amplifying device like a microphone, the speaker can use a natural tone. But speaker should not be dependent on microphones. A good speaker can speak loudly without shouting. The second element, pitch is related to the highness or lowness of the sounds. High pitches are for most people more difficult to listen to. So, in general, speaker should use the lower registers of their voice. During a presentation, it's important to vary pitch to some extent in order to maintain interest. The third element, pace, that is how fast or slow words and sounds are articulated should also be varied. A slower pace can be used to emphasize important points. Note that the time spent not speaking can be meaningful too. Pauses ought to be used to signal transitions or create anticipation. Because a pause gives the listener time to think about what was just said or even to. predict what might come next, it can be very affective when moving from one topic to another. What I'd like you to do now is watch and listen to a videotape and use the forms I gave you to rate the speaking voices you hear. Then tonight, I want you to go home and read a passage into a tape recorder and evaluate your own voice.According to the professor, what can a speaker do to keep an audience's attention?A．Speak very loudly.B．Ask questions frequently.C．Vary tone, volume, and speed of speech.D．Limit the speech to fifteen minutes.
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