题目内容
（请给出正确答案）
[单选题]
Can you keep a（n)_____ on the children while I go shopping？
A.eye
B.step
C.look
D.see
答案
A、eye
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
答案
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.eye
B.step
C.look
D.see
答案
A、eye
如果结果不匹配，请 联系老师 获取答案
更多“Can you keep a(n)_____ on the …”相关的问题
A.replay
B.contact
C.respond
D.press
—What kind of job _______________？
—I want to be a doctor, so that I can save lives and help people to be healthier.
A. do you have in heart
B. do you have in mind
C. you put in your heart
D. you keep in your mind
A.Yes, indeed
B.Certainly, but will it take long
C.I’m afraid we don’t
D.No, I can’t help you
A、informed
B、amused
C、outlined
D、swallowed
A、try to produce and sell that quantity of output at which marginal cost has risen to equality with price
B、try to produce and sell that quantity of output at which marginal cost is equal to average variable cost
C、try to produce and sell that quantity of output at which marginal cost has reached its minimum possible level
D、never let marginal cost reach equality with price, since this is the point at which profits become zero
E、keep marginal cost above price
Today we live in a world where GPS systems, digital maps, and other navigation apps are available on our smart phones. 1 of us just walk straight into the woods without a phone. But phones 2 on batteries, and batteries can die faster than we realize. 3 you get lost without a phone or a compass, and you 4 can’t find north, a few tricks to help you navigate 5 to civilization, one of which is to follow the land... When you find yourself well 6 a trail, but not in a completely 7 area, you have to answer two questions: Which 8 is downhill, in this particular area？ And where is the nearest water source？ Humans overwhelmingly live in valleys, and on supplies of fresh water. 9 , if you head downhill, and follow any H2O you find, you should 10 see signs of people. If you’ve explored the area before, keep an eye out for familiar sights—you may be 11 how quickly identifying a distinctive rock or tree can restore your bearings. Another 12 : Climb high and look for signs of human habitation. 13 , even in dense forest, you should be able to 14 gaps in the tree line due to roads, train tracks, and other paths people carve 15 the woods. Head toward these 16 to find a way out. At night, scan the horizon for 17 light sources, such as fires and streetlights, then walk toward the glow of light pollution. 18 , assuming you’re lost in an area humans tend to frequent, look for the 19 we leave on the landscape. Trail blazes, tire tracks, and other features can 20 you to civilization. 1.
A、Some
B、Most
C、Few
D、All
Finding a good work-at-home job is not easy. Although you see all the online advertising, there aren't that many of them. Those that are available may require that you live in a certain area or spend at least some time in the office. Others may be only part-time jobs. Keep in mind that the skills needed for home employment are similar to those needed for working in an office. You'll also need a home office with a high speed internet connection, phone, fax, computer, printer, and other basic office equipment. To get started, consider your job search as your job. Spend as many hours per week on your job search as you would spend working. If you're looking for full-time work, you should be spending fill-time hours seeking a job. Networking (人际关系) remains the top way to find a job and it does work. Develop contacts—friends, family, even the other job seekers—anyone who might have the information you need. You can take a direct approach and ask for job information or try a less formal approach and ask for information and advice. Contact everyone you know and tell them you want to work from home. You may be surprised by the people they know and the job information they can provide.
According to the first paragraph, it is not easy to find good work-at-home jobs because ______.
A、they are seldom advertised online or in newspapers
B、they may require that you live in a certain place
C、you are always asked to work full-time
D、you need to have a college degree
Have you ever felt so anxious during an examination that you couldn't even put down the answers you knew？ If so, you were suffering from what is known as test anxiety.According to psychologist Ralph Trimble, test anxiety is a very real problem for many people. When you're worried over your performance on an exam, your heart beats faster and your pulse speeds up. These reactions start others: You may sweat more than normal or suffer from a stomachache or headache. Your field of vision narrows and becomes tunnel-like. Before you know it, you're having difficulty focusing."What I hear students say over and over again," says Dr. Trimble, who is working at the Psychological and Counseling Center at the University of Illinois, "is, 'My mind went blank.'"
For a number of years, Dr. Trimble helped many students learn how to perform. better during exams and to bring up their grades. Some of these students were interested in sharing what they learned and, with Trimble's help, began holding workshops on overcoming test anxiety. For many students, just being in a workshop with other sufferers made them feel better. They realized that they were not the only ones who had done poorly on tests because of tension.The workshops were so successful that they are still given.In the workshops, students are taught that anxiety is normal. You just have to prevent it from getting the best of you. The first step is to learn to relax. If before or during an examination you start to panic, stretch as hard as you can, tensing the muscles in your arms and legs; then suddenly relax all of them.This will help relieve tension. But keep in mind that you don't want to be too relaxed. Being completely relaxed is no better than being too tense. "If you are so calm you don't care how you do on an examination, you won't do well," Trimble says. "There is an optimum level of concern when you perform. at your best. Some stress helps. There are people who can't take even slight stress. They have to learn that in a challenging situation, being anxiously excited is good and will help them to do better. But if they call it anxiety and say, 'It's going to hit me again, ' that will make them nervous and worried."
As a student you must also realize that if you leave too much studying until a day or two before the examination, you can't do the impossible and learn it all. Instead, concentrate on what you can do and try to think what questions are likely to be asked and what you can do in the time left for studying.When you sit down to study, set a moderate pace and vary it by reading, writing notes, and going over any papers you have already written for the course, as well as the textbooks and notes you took in class. Review what you know. Take breaks and go to sleep early enough to get a good night's rest before the exam. You should also eat a moderate breakfast or lunch, avoiding drinks like coffee and stay away from fellow students who get tense. Panic spreads easily.Get to the exam room a few minutes early so that you will have a chance to familiarize yourself with the surroundings and get out your supplies. When the examination is handed out, read the directions twice and underline the significant instructions, making sure you understand them. Ask the teacher to explain if you don't. First answer the easiest questions, then go back to the more difficult.On essay questions, instead of starting right away, take a few minutes to organize your thoughts, make a brief outline, and then start off with a summary sentence. Keep working steadily, and even when time starts to run out, don't speed up.
1.We learn from the passage that test anxiety ____.
A、affects a small number of people
B、can lead to physical discomfort
C、can have a negative effect on a person's eyesight
D、often affects those who are physically weak
2.Dr Trimble often heard students say that ____
A、their mind failed to work when faced with a test
B、they had difficulty focusing on the test items
C、they could not think of a way to get rid of test anxiety
D、they began panicking well ahead of a test
3.In Trimble's workshop the students learned ____.
A、how to avoid being controlled by test anxiety
B、that test anxiety is normal and would go away in time
C、certain mental exercises that would help them relax
D、how to concentrate on what they could do
4.According to the passage, being completely relaxed before a test ____
A、helps a student to perform. better in the test
B、can also be harmful to a person's performance in the test
C、helps a student to cope with a challenging situation better
D、may be more harmful than getting too worried over tests
5.The author suggests that before a test ____.
A、you shouldav6id staying with a fellow student who suffers test anxiety
B、you should not think that you will be affected by your fellow student's anxiety
C、you should get together with other sufferers of test anxiety in order to feel better
D、you should eat a big meal and drink some coffee to keep yourself in high spirits
Biologists today don’t expect that anyone will find a magical fountain of youth.Growing older is a natural part of the life cycle that can’t be reversed.As human beings grow older, organs such as the heart and lungs may stop functioning properly.Sight and hearing may become weak.And the human body becomes more likely to come down with serious illnesses from which it cannot recover.
Considered together, changes that bring about the decline of an organism are called aging.Because of aging, many biologists believe that there may be a maximum age limit to which even the healthiest organisms can live.For human beings, this maximum age limit is about 110 years.
Perhaps the most important thing that you can learn from your study of human biology is that you have a lot of control over the aging process in your own life.In fact, within our control are many physical and mental factors that have much to do with aging.For example, each of us, as recent research indicates, can do many things to help prevent heart and vessel disease, which causes half the death each year in the United States.We can avoid eating a lot of fatty meat.Eating too much of these types of animal fats can lead to the clogging and hardening of blood vessels.We can cut back on smoking and hopefully quit entirely.We can limit the amount of alcohol we drink and the amount of sugar we eat.We can exercise regularly and strengthen the heart and other organs.And we can remember to take time out each day for ourselves, time just relax.Exercise, recreation and relaxation all reduce stress – inner tension that is hard on all body organs.
One final thing we can do is to try to keep aware of advances made in health education.Information is often available free of charge from health clinics or schools.
1.Which of the following is the leading cause of death in the United States？
A.Heart disease.
B.Cancer
C.Alcohol
D.Smoking
2.What happens as people grow older？
A.They dream of a magic pill to help them live a happy and long life
B.They come down with serious illnesses
C.Their organs become weak and may stop working properly
D.Their blood vessels become clogged
3.In the opinion of biologists, _________.
A.the aging process can be reversed
B.the aging process can be controlled and slowed down
C.the aging process can be got rid of
D.the aging process can go beyond its limit
4.We can slow down the weakening of all our body organs by ______.
A.not eating animal fat
B.limiting drinking and smoking
C.exercise, recreation and relaxation to reduce stress
D.preventing the clogging and hardening of blood vessels
5.Besides physical and mental factors, which of the following also contributes to living a long and healthy life according tot the passage？
A.Health education
B.Traditional medicine
C.artificial organs
D.The invention of magic pills
就下列情况，画出代表性的等产量线。每种情形的边际技术替代率怎样？
(1)一个企业可以全部采用全日制工人生产，也可采用全日制员工加兼职员工组合的方式。每当一个全日制员工离职，就必须雇佣更多的兼职员工，以保持产出不变。
(2)一个企业发现总能够用两单位劳动代替一单位资本而保持产出不变。
(3)一个企业要求两名全职工人操作工厂里的一台机器。
For each of the following examples, draw a representative isoquant. What can you say about the marginal rate of technical substitution in each case？
a A firm can hire only full - time employees to produce its output, or it can hire some combi-nation of full-time and part - time employees. For each full - time. worker let go, the firm must hire ban increasing number of temporary employees to maintain the same level of output.
b. A firm finds that it can always trade two units of labor for one unit of capital and still keep output constant.
c. A firm requires exactly two full time workers to operate each piece of machinery in the factory.
A.keep
B.have
C.take
D.make
