题目内容

【题目】 It was so noisy that we hear ourselves speak.

A. couldn’t B. shouldn’t

C. mustn’t D. needn’t

【答案】A

【解析】

试题分析：句意：太吵了，以致我们不能够听到我们在说什么？A的意思是不能，B的意思是不应该，C的意思是禁止，D的意思是不需要。该题用到了一个so +形容词+ that的句式，做题时应该正确理解句意及这个句式的用法。正确理解这是表达不能还是表达其他的东西。must只能用于肯定句，用于否定句表示禁止，这一点尤其要注意因为往往会出错。如果表示一种可能往往是can 的形式（过去时态使用could）

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RAINFOREST ADVENTURE TIPS

1. Find out about the trail and surroundings, be sure that you have enough time to complete the entire route before darkness falls. Do not stray off the path to chase after animals.

2. Use good judgment regarding the fitness level required for the trek(徒步跋涉), and know your physical limits.

3. Always inform the park officials or let someone know of your plans and destination for the day, especially if going alone.

4. Take plenty of water and pack a few easy to eat snacks to keep energy level up. Unless trekking with a local guide, it is not advisable to eat jungle fruit or drink from any water source.

5. Be as quiet as possible to avoid scaring any wildlife. Getting an early start during the dawn provides the best chance to sight animals seeking food and the warmth of the early morning sun.

6. Wear thin, loose, preferably cotton clothing to remain comfortable.

7. Cover arms and legs with long trousers and long-sleeved shirts to ward off mosquitoes and to provide protection against thorny plants.

8. Be prepared for sudden rain showers by carrying a poncho that wraps over both body and your carrying pack to keep everything dry.

9. Choose footwear with proper ankle support and good traction.

10. A wide brimmed hat helps to shade a trekker from the heat of the tropical sun.

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C.Hiking boots.D.A wide brimmed hat.

【3】If a trekker starts out at dawn, he may ______.

A.escape being caught in the rainB.sight scared wildlife

C.enjoy the heat of the tropical sunD.see animals seeking food

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