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机电产品国际招标的综合评价法应当对每一项评价内容赋予相应的权重，其中价格权重小计不得低于30%，技术权重小计不得高于()。
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We should also know that "greed" is little related to the environmental crisis. The two main factors are population pressures, especially the pressures of large metropolitan populations, and the desire to bring a decent living with the lowest possible cost to the largest possible number of people.
The environmental crisis is the result of success in cutting down the morality of infants (which has given us the population explosion), success in increasing farm output sufficiently to prevent mass famine, success in getting people out of the tenements of the 19th century city and into the greenery anti privacy of single family home in the suburbs (which has given us urban sprawl and traffic jams). The environmental crisis, in other words, is the result of doing too much of the right sort of thing at large.
To overcome the problems that success always creates, one mast build on it. But where to start？ Cleaning up the environment requires determined, sustained effort with clear targets and deadlines it needed, above all, concentration of effort. Up to now we have tried to do a little bit of everything, what we ought to do first is to draft a list of priorities.
This passage assumed the desirability of ______.
Container gardening is especially adapted to present living. Plants in containers show great variety of form. and texture. They can be used to create instant indoor gardens; they can be moved from one home to another; and they can be moved outdoors in the summer and indoors during the cooler months.
Space is not a problem. Container gardening can be conducted in a single pot on a table or window sill, in a more elaborate room divider, or in a built-in planter.
Just as there are many kinds of plants, there are many kinds of containers. Plants can be grown in any container that will hold a growing medium. The choice ranges from the common clay pot to cans, jars, boxes, baskets and tubs.
Most people select containers for both their practical and "esthetic qualities". These include cost, availability, weight, strength, durability, attractiveness and sentimental value.
The size and shape of the container should depend on the plant's size and shape. Tall, tapering plants are more attractive in tall, relatively narrow containers. Short, compact plants appear more at home in shallow, wide containers.
Particularly important considerations for good plant growth are the volume and depth of the container, and some provision for drainage. Containers that have drainage holes in the bottom for the removal of excess water are best. Water-right containers are difficult to manage--excess water will accumulate at the bottom of the container and injure plant roots by excluding oxygen.
Container volume and depth become important in relation to the quantity of available water and nutrients.
Besides the right kind of container, some basic requirements for plant growth must be provided. Plants need light, water, nutrients, and a satisfactory temperature ranges.
Light is the most critical requirement. The levels of all the other requirements are regulated in relation to the amount of light that plants receive. When plants don't have enough light they become tall and thin. Plants are easier to maintain in good condition when their light requirements are met.
This article is primarily about ______.
Many teachers believe that the responsibilities for learning lie with the students.【C1】______a long reading assignment is given, instructors expect students to be familiar with the【C2】______in the reading even if they do not discuss it in class or take an examination. The【C3】______student is considered to be【C4】______who is motivated(激发)to learn for the sake of【C5】______, not the one interested only in get ting high grades. Sometimes homework is returned【C6】______brief written comments but without a grade. Even if a grade is not given, the student is【C7】______for learning the material assigned. When research is【C8】______, the professor expects the students to take it actively and complete it with【C9】______guidance. It is the【C10】______responsibility to find books, magazines, and articles in the library. Professors do not have the time to explain【C11】______a university library works; they expect students,【C12】______graduate students, to be able to exhaust the reference【C13】______in the library. Professors will help students who need it, but【C14】______that their students should not be【C15】______dependent on them. In the United States professors have many other duties【C16】______teaching, such as administrative or re search work.【C17】______, the time that a professor can spend with a student outside of class is【C18】______If a student has problems with classroom work, the student should either【C19】______a professor during office hours【C20】______make an appointment.
【C1】
听力原文： Now, I' d like to talk about psychological- space.
Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural preference, not an economic one. Knowing our own psychological space needs is important because they strongly influence your choices, including, for example, the number of bedrooms in the home. If you were reared in a two-child family and both you and your sister or brother had your own bedrooms, the chances are, if you have two children or more, that you also will provide separate bedrooms for them. In America they train people to want their own private rooms by giving them their own rooms when they are babies. This is very rare in the world. In many cultures the baby sleeps in the same bed with his parents or in a crib near their bed.
The areas 'in the home where people gravitate also reveals a lot about psychological space needs: Some families cluster, and the size of their house has nothing to do with it. Others have separate little niches where family members go to be alone.
Although it is true that psychological space needs are not determined by economic factors, they sometimes have to be modified a little because of economic pressures. It is almost impossible, however, to completely change your psychological space needs.
Which of the following is the factor that determines human beings' psychological space needs？
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