问题
单项选择题
某土方工程，3月份计划工程量1万m3，计划单价10元/m3，实际完成工程量1.1万m3，实际单价9.8元/m3。3月底该土方工程的进度偏差为（）万元。
A．-1.00
B．-0.98
C．-0.78
D．-0.22
答案
参考答案：A
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某土方工程，3月份计划工程量1万m3，计划单价10元/m3，实际完成工程量1.1万m3，实际单价9.8元/m3。3月底该土方工程的进度偏差为（）万元。
A．-1.00
B．-0.98
C．-0.78
D．-0.22
参考答案：A
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| One of the most important ways to help plants and animals is to protect their habitats (栖息地). There they can live 1 too much interference (干涉) from humans. It is also important to 2 habitats outside reserves. You can visit a nearby national park or a(n) 3 reserve. Some national parks have 4 guided tours. Talk to the rangers (护林员) to find out whether animals are in danger and 5 people protect them. For example, you and your friends 6 help the rangers with their work. If you have friends on farms, 7 them to keep patches (小块地) of bush as wildlife habitats and to leave old trees standing, especially those with hollows (洞) suitable for nesting animals. Some groups 8 local lands and nature reserves. They do this by removing weeds and planting local native species in their places. You could join one of these groups, or 9 start a new one with your parents and your friends. Remove rubbish and replant trees; all these will also encourage native animals to 10 . | ||||
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