【正确答案】 A

【答案解析】[听力原文] 8-10
The American Space Agency is continuing experiments that would make possible extended periods of space travel. One of these experiments is aimed at finding ways to grow food in space. Scientists at the Kennedy Space Center in the Southern state of Florida are doing these experiments. They are attempting to grow vegetables that could survive without sunlight and dirt. Their laboratory is a large circular container. Computers control the levels of light, heat, water, fertilizer, and gases in the laboratory's atmosphere. The plants are grown in special devices that hold about 1 centimeter of liquid plant food. Plastic sheets cover the roots of the plants. The containers are designed to keep the plants from floating away in the weightless environment of space. Water is collected and reused. Bacteria and fungi help turn plant matter into simple sugars that could be added to the astronaut's food or fed to fish.
In the special containers plants can develop rapidly in a short period of time. Astronauts would need only to watch the computers to see if the plants are getting what they need.
The scientists at the Kennedy Space Center laboratory have been able to produce small kinds of wheat, soybeans, lettuce, and white potatoes. Universities around the country are testing other small size crops, such as carrot, tomatoes and rice in special growing containers.
Scientists also are attempting to genetically design some of these plants to contain high levels of proteins. They are studying ways to use parts of the plants that can not be eaten and they will also try to find ways of using human wastes to fertilize the plants. Scientists at the Johnson space Center in Houston, Texas, are trying to grow crops in a mixture of volcanic dirt and crashed glass. The matter is similar to soil found on the moon. Lettuce and wheat have grown well in the mixture. Space Agency scientists hope to test some version of the experimental gardens on the planned space station. But the special growing containers are expected to be used mostly for long distance space travel. A trip to Mars, for example, is expected to take about one year. When the astronauts reach Mars, they could try to use the soil there to grow other crops.

[试题分析] 此题考查学生“利用已知信息进行判断”的能力。
[解题思路] 这道题首先要从答案人手，对四个选项一一进行分析，将它们与听力原文所知信息进行比较，判断正误。
[关键词语] Not true(不真实)
[详细解答] 根据听力原文中的信息，可以看出答案A是不完整的。原文中这样叙述的“They are attempting to grow vegetables that could survive without sunlight and dirt”可见答案少了一个条件，而其它三个答案基本与原文相同，因此选A。

【正确答案】 D

【答案解析】[试题分析] 此题考查学生“掌握听力材料中某些细节”的能力。
[解题思路] 从答案可以看出，这是一个列举题，是对原文中所提到的一些植物种类进行辨别，是一个对细节进行考查的题目，所以要根据已知信息进行排除。对这样的细节在听的时候需注意记录。
[关键词语] produce small kinds of(生产出少量品种的…)
[详细解答] 在听力材料的第三段中就明确列举了一些植物品种如wheat，soybeans，lettuce and white patatoes等，因此只要在听的时候做了记录，就可选择出正确答案是D。

【正确答案】 B

【答案解析】[试题分析] 此题考查学生“掌握听力材料中某些细节”的能力。
[解题思路] 从答案可以得知，这是一个关于何种太空飞行的问题，相比较而言，信息不是很多很复杂，只要在听材料的过程中对与本题某些关键词语有所记录或稍加留心，是可以选择出正确答案的，这道题与前面一题相似，都需要在做题前认真浏览题目，做到有的放矢。
[关键词语] space travel(太空旅行)
[详细解答] 这条信息出现在听力材料的最后部分，而且基本与题目相同“But the special growing containers are expected to be used mostly for long distance space travel”。因此应选B。