In paragraphs 4 and 5 the author conveys a message that

A．you will have a positive effect by putting energy into your voice

B．besides pushing against a wall, you have another way to relax the vital triangle

C．imagining you are rowing a boat can help you relax your body

D．if you master the techniques informed by him/her you will never be nervous again

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参考答案

答案解析

定位：根据题干信息paragraphs 4 and 5可直接将答案定位到第四段和第五段。
解析：第四段详细介绍的是如何摆出一种姿势，第五段作者开始教读者们如何感受“关键三角区”肌肉的工作原理：“……你的关键三角区会觉得紧张。在呼气的最后放松你的肌肉，然后轻轻地吸气。”可见，按照作者所介绍的步骤即可以找到关键三角区的位置，并使其放松。故选B。

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1 If you have active thoughts, your audience will detect that

A．you are full of fear and depression

B．you are joyful and easy-going

C．you are tightening your vital triangle

D．you are relaxing your muscles

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2 Questions are based on the following passage.
Coincident with concerns about the accelerating loss of species and habitats has been a growing appreciation of the importance of biological diversity, the number of species in a particular ecosystem( 生态系统., to the health of the Earth and human well-being. Much has been written about the diversity of terrestrial organisms ( 陆生生物., particularly the exceptionally rich life associated with tropical rain-forest habitats. Relatively little has been said, however, about diversity of life in the sea even though coral reef.systems are comparable to rain forests in terms of richness of life.
An alien exploring Earth would probably give priority to the planet's dominant, most distinctive feature-the ocean. Humans have a bias toward land that sometimes gets in the way of truly examining global issues. Seen from far away, it is easy to realize that land masses occupy only one-third of the Earth's surface. Given that two-thirds of the Earth's surface is water and that marine life lives at all levels of the ocean, the total three-dimensional living space of the ocean is perhaps 100 times greater than that of land and contains more than 90 percent of all life on Earth even though the ocean has fewer distinct species.
The fact that half of the known species are thought to inhabit the world's rain forests does not seem surprising,considering the huge numbers of insects that comprise the bulk of the species. One scientist found many different species of ants in just one tree from a rain forest. While every species is different from every other species, the genetic makeup constrains them to be insects and to share similar characteristics with 750,000 species of insects. If basic, broad categories such as phyla( 门. and classes( 纲. are given more emphasis than differentiating between species, then the greatest diversity of life is unquestionably in the sea. Nearly every major type of plant and animal has some representation there.
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The main point of the passage is that

A．humans are destroying thousands of species

B．there are thousands of insect species

C．the sea is even richer in life than the land

D．coral reefs are similar to rain forests

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3 Why does the author compare rain forests with coral reefs?

A．They are approximately the same size.

B．They share many similar species.

C．Most of their inhabitants require water.

D．Both have many different forms of life.

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