1.播种及发芽阶段(seed,sprout,8月份种植，发芽期10—15天)；
2.生长及发育阶段(stem,blossom,幼苗期30—50天)；
3.成熟及结果阶段(produce,fruit,开花、结果期60—100天)。
注意：
1.词数80左右;
2.请在相应位置作答。
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Bamboo is one of the world’s most useful plants. For thousands of years bamboo has been used in many different ways—from food to medicine to clothing and, in small ways, as a building material.
However, bamboo is not often used as a building material in the developed world. A professor at the University of Pittsburgh in Pennsylvania is trying to change that. The professor and his students are testing the strength of bamboo. They are testing its radial load, or how much pressure or weight it can take before breaking. Kent Harries is a professor at the University of Pittsburgh. Harries says that testing methods for bamboo needs to be the same for all. They need to be standardized.
Harries says bamboo is strong in nature. The strength of at least three species of bamboo is similar to steel. Besides its strength, Harries says that bamboo has other features that make it a great building material. He says it is resilient, meaning it keeps its shape and strength even under pressure.
Bamboo also grows quickly. Bamboo that is suitable for construction needs much fewer resources than wood. The harvest cycle of bamboo is about 3 years. Softwoods such as cedar, pine and spruce have a harvest cycle of about 10 years. And hardwoods that come from flowering plants such as oak, maple and walnut need more than 30 years.
Bamboo is widely used as food for pandas. It is also used for flooring and window covers. However, for building, bamboo is not used much outside its native growing area. This is mostly because of its round shape. But there are other reasons too. People think that bamboo is a low-quality building material.
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1．古树保护的意义；2．古树保护面临的问题；3．你的建议。
注意：1．词数100左右；2．可以适当增加细节，以使行文连贯。
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Watering is key to growing plants well, so here we look at how to get it just right. This not only means providing the water our gardens need but using it wisely. Water is a precious resource and supplies in the UK are under pressure from the effects of climate change, population increase and the need to protect the environment. Generally, several aspects need to be considered.
When to water
Water in the mornings, if you can, as this is when the sun comes up and plants start to transpire (蒸腾) in sunlight, drawing water from the soil, through their roots, up their stems and to their leaves. Evening watering is also fine, as the cooler conditions mean less water is lost to evaporation (蒸发). Watering in the heat of the day is not a good idea, as much water is lost through evaporation from the surface of the soil. Plants will use water more efficiently if watered in the cooler parts of the day.
How to water
Watering thoroughly matters. It helps get the water down to the deeper root tips where it’s needed. But, equally important, the soil doesn’t have to be really wet all the time because plants roots need air as well as water to grow well. Otherwise, there might be no flower or fruit, and even a worse result might come along.
Other tips
To use water in the most economical way, it’s good to learn different plants’ watering requirements. For example, a container plant in hot sunny weather may need watering daily, whereas a mature shrub might only need a drink in extreme drought. Annual flowers and vegetables produced in the spring are likely to need more watering than self-sown or autumn grown plants as they have new and shallow root systems. So, don’t treat all the plants in the same way.
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