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单选题
Aerobic exercises create a demanding for oxygen in the body without seriously disruptingnormal body functions.
A
demand
B
demanding
C
demanding of
D
demand for
参考答案
参考解析
解析：
句意：有氧运动在不严重扰乱人体机能情况下使人体内部产生对氧气的需求。demand作名词时，指要求、需求，与for连用，指对某物的需求。demanding要求高的，需要高技能的，费力的，也形容某人苛刻的、难满足的。
句意：有氧运动在不严重扰乱人体机能情况下使人体内部产生对氧气的需求。demand作名词时，指要求、需求，与for连用，指对某物的需求。demanding要求高的，需要高技能的，费力的，也形容某人苛刻的、难满足的。
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第三组：The sewage treatment system must be capable of discharging an effluent that comes within the limits of the tests. Sewage can be treated biologically so that it may be discharged with minimal damage to ecosystem. Biological treatment involves the use of living organisms to treat the sewage within the sewage treatment plant so the liquids and sludge discharged are within the standards specified.Biological treatment plants are usually built up as a module and consist of various sections.Waste matter collected from the ships sanitary appliances is led through a sanitary piping system to the treatment module. The solid matter is broken up by passing it through a screen or a series of revolving cutters. The broken up solid material, together with the waste liquid, passes into a tank containing bacteria which require oxygen and a nutrient to propagate. The nutrient is contained in the solid waste material, and oxygen is supplied by bubbling compressed air through the broken up waste. The propagated bacteria change the waste material into a sludge by aerobic digestion. The sludge is finally treated to kill the coliform. bacteria before it is passed overboard.When a biological sewage plant is started up, such as when activating a new ship or after cleaning out the tank, a pellet containing bacteria is introduced into the tank. It takes approximately one week for the bacteria to propagate and make the system fully effective. The choice of sanitary appliance cleaners requires extreme care, as many cleaners are toxic to the active bacteria. Once a biological sewage plant is made active it should not be shut down. If it is it will have to be reactivated again because the bacteria will die without a supply of nutrients and oxygen.Bacteria that require oxygen for their survival are referred to as aerobic. Aerobic bacteria are normally used in ships sewage treatment equipment. Other forms of bacteria that do not require oxygen are referred to as anaerobic. Anaerobic bacteria are used in shore based sewage treatment works where methane is obtained as a by-product for use as fuel.This passage is mainly aboutA.sewage treatment methodsB.the various sections of a sewage treatment plantsC.biological sewage treatment systemD.how the sewage treatment plants are started up
考题
When anaerobic bacteria convert the sewage to an inert sludge, .A.no oxygen is neededB.oxygen is necessaryC.oxygen is given offD.no gas is produced
考题
Deficient oxygen content inside a chain locker can be detected with ______.A.litmus paperB.a combustible gas indicatorC.an oxygen breathing apparatusD.an oxygen indicator
考题
Writing exercises like copying, fill-in, completions and transformation are mainly the type of exercises used in__________.
A．controlled writing
B．guided writing
C．free writing
D．expressive writing
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翻译33-37划横线的句子：
(33)I first took up walking as a means of escape. (34)After a busy morning in my office, I found it refreshing to take a stroll at lunchtime, to breathe the fresh air and feel the sun. Another walk in the cold night air was, I discovered, an exhilarating way to unwind. (35)Walking--like swimming, bicycling and running--is an aerobic exercise which builds the capacity for energy output and physical endurance by increasing the supply of oxygen to skin and muscles. (36)Such exercise may be a primary factor in the prevention of heart and circulatory disease. (37)As probably the least strenuous, safest aerobic activity, walking is the most acceptable exercise for the greatest number of people. Walking at comfortable speed improves the efficiency of the cardio-respiratory system by stimulating the lungs and heart, but at a more gradual rate than most other forms of exercise.
____37____
考题
Vitamins are similar because they are made of the same elements—usually carbon,hydrogen,oxygen,and sometimes nitrogen.They are different in that their elements are arranged differently,and each vitamin been（ ）one or more specific functions in the body.A.holds
B.plays
C.performs
考题
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Perhaps the best way to deal with such moods is to talk them out;sometimes,though,there is no one to listen.Modern pharmacology（药物学）offers a lot tranquilizers（镇定剂）and anti-anxiety drugs.What many people don′t realize,however,is that scientists have discovered the effectiveness of several non-drug methods to make you free from an unwanted mood.These can be just as useful as drugs,and have the added benefit of being nonpoisonous.So next time you feel out of sorts,don′t head for the drug store--try the following method.
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B.How to talk bad moods out.
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D.How to do aerobic exercise.
考题
When the children are doing body exercises，the parents should NOT( ) A.explain the importance of physical activity in keeping people shaped and slim
B.also take part in the activities by themselves
C.try to find out activities that are suitable for the children
D.encourage the children to participate in physical activities
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考题
单选题Bacteria which live are said to be aerobic（）A
in the presence of oxygenB
without oxygenC
in the presence of nutritionD
without nutrition
考题
填空题Glucose can be completely broken down into carbon dioxide and water when oxygen is present in the process called aerobic respiration.____
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单选题Early fitness spas were intended mainly for _____.A
the promotion of aerobic exerciseB
endurance and muscular developmentC
the improvement of women’s figuresD
better performance in aerobic dancing
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＜body＞、＜/body＞C
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考题
单选题Deficient oxygen content inside a chain locker can be detected with（）.A
litmus paperB
a combustible gas indicatorC
an oxygen breathing apparatusD
an oxygen indicator
考题
单选题Writing exercises like copying, fill-in, completions and transformation are mainly the type of exercises used in _____.A
controlled writingB
guided writingC
flee writingD
expressive writing
考题
单选题An oxygen indicator will detect （）.A
the amount of oxygen in a spaceB
the presence of harmful amounts of carbon monoxideC
concentrations of explosive gasD
All of the above
考题
填空题Aerobic respiration would occur in endurance events.____
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