【单选题】政府用于支持纯理论研究的投入经常被认为是浪费，似乎只有直接的技术应用可以证明科学的价值。但是，如果没有纯理论研究，应用技术终将成为日渐枯竭的无源之水。今天的纯理论研究可能看来没什么用，但是谁也说不准某一天它会产生什么样的应用奇迹。这正如人们完全可以问：“新生的婴儿有什么用？”上述议论基于以下哪项假设？
I理论发现和它的实际应用之间存在时间上的差距。
II纯理论研究比技术应用更费时间和金钱。
III理论转化为实际应用的时间越长，这种理论就越有价值。（）
A.仅仅I。
B.仅仅II。
C.仅仅III。
D.仅仅I和III。
E.I、II和III。
上述论证把“新生婴儿”比作以下哪项？（）
A.基于纯理论的一种新技术突破。
B.政府对科学研究的投入。
C.公众对纯理论研究的支持。
D.新技术成果使社会得到的受益。
E.一时看不到直接应用价值的纯理论发现。农场发言人：毗邻我农场的炼铅厂引起的空气污染造成了本农场农作物的大幅度减产。
I理论发现和它的实际应用之间存在时间上的差距。
II纯理论研究比技术应用更费时间和金钱。
III理论转化为实际应用的时间越长，这种理论就越有价值。（）
A.仅仅I。
B.仅仅II。
C.仅仅III。
D.仅仅I和III。
E.I、II和III。
上述论证把“新生婴儿”比作以下哪项？（）
A.基于纯理论的一种新技术突破。
B.政府对科学研究的投入。
C.公众对纯理论研究的支持。
D.新技术成果使社会得到的受益。
E.一时看不到直接应用价值的纯理论发现。农场发言人：毗邻我农场的炼铅厂引起的空气污染造成了本农场农作物的大幅度减产。
【单选题】Discipline cannot be ______ until the last day of school has passed.
A．lessened
B．reduced
C．relaxed
D．lowered
A．lessened
B．reduced
C．relaxed
D．lowered
【单选题】The discussion was so ______ that at intervals the speakers stopped for refreshments.
A．exhausted
B．exhausting
C．excited
D．exciting
A．exhausted
B．exhausting
C．excited
D．exciting
【单选题】To cover an area of 3 square miles and get information about each point along the way, how many smart dust sensors, are needed
A．About 3,000 sensors.
B．About 3,300 sensors.
C．About 5,000 sensors.
D．About 6,600 sensors.
A．About 3,000 sensors.
B．About 3,300 sensors.
C．About 5,000 sensors.
D．About 6,600 sensors.
【单选题】It is difficult to imagine what life would be like without memory. The meanings of thousands of everyday perceptions, the bases (51) the decisions we make, an d the roots of our habits and skills are to be (52) in our past experiences, which are brought into the present (53) memory.
Memory can be defined as the capacity to keep (54) available for later use. It includes not only "remembering" things like arithmetic or historical facts, but also any change in the way an animal typically behaves. Memory is (55) when a rat gives up eating grain because he has sniffed something suspicious in the grain pile. Memory is also involved when a six-year-old child learns to swing a baseball bat.
Memory (56) not only in humans and animals but also in some physical objects and machines.Computers, for example, contain devices for storing data for later use. It is interesting to compare the memory-storage capacity of a computer (57) that of a human being. The instant-access memory of a large computer may hold up to 100000 "words" —ready for (58) use.An averageAmerican teenager probably recognizes the meanings of about 100000 words ofEnglish. However, this is but a fraction of the total (59) of information which the teenager has storeD、Consider, for example, the number of facts and places that the teenager can recognize on sight. The use of words is the basis of the advanced problem-solving intelligence of human beings.A、large part of a person’s memory is in terms of words and (60) of words.
A、experiencesB、bases C、observationsD、information
Memory can be defined as the capacity to keep (54) available for later use. It includes not only "remembering" things like arithmetic or historical facts, but also any change in the way an animal typically behaves. Memory is (55) when a rat gives up eating grain because he has sniffed something suspicious in the grain pile. Memory is also involved when a six-year-old child learns to swing a baseball bat.
Memory (56) not only in humans and animals but also in some physical objects and machines.Computers, for example, contain devices for storing data for later use. It is interesting to compare the memory-storage capacity of a computer (57) that of a human being. The instant-access memory of a large computer may hold up to 100000 "words" —ready for (58) use.An averageAmerican teenager probably recognizes the meanings of about 100000 words ofEnglish. However, this is but a fraction of the total (59) of information which the teenager has storeD、Consider, for example, the number of facts and places that the teenager can recognize on sight. The use of words is the basis of the advanced problem-solving intelligence of human beings.A、large part of a person’s memory is in terms of words and (60) of words.
A、experiencesB、bases C、observationsD、information
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