Vitamins are a group of substances found in food. The body needs them for life and health. So (1), many people are concerned (2) the question: Am I getting enough vitamins, and am I getting the (3) kind？

A . A、program B . B、portfolio C . C、project of large size D . D、PMO

A .  Make the changes in HACMP and synchronize the cluster. B .  It cannot， because changes like this cannot be made while the cluster is running. C .  Make the changes in HACMP and wait until the next failure for the changes to take affect. D .  Use the forced option to stop the cluster，make the changes，and restart cluster services.

A . Fire party B . Deck cadets C . Research team D . Damage control team

A .  DAI B .  STP C .  PVLAN D .  port security

A . CREATE ROLL registrar; GRANT MODIFY ON student_grant TO registrar; GRANT registrar to user 1, user2, user3 B . CREATE NEW ROLE registrar; GRANT ALL ON student_grant TO registrar; GRANT registrar to user 1, user2, user3 C . CREATE ROLL registrar; GRANT UPDATE ON student_grant TO registrar; GRANT ROLE to user1, user2, user3 D . CREATE ROLL registrar; GRANT UPDATE ON student_grant TO registrar; GRANT registrar to user 1, user2, user3; E . CREATE registrar; GRANT CHANGE ON student_grant TO registrar; GRANT registrar

A . Cancel-based B . Recovery using a backup control file C . Time-based D . Change-based

A . number B . abbreviation C . letter D . All of the above

A .  The resource group containing the IP labels changes to an "offline" state. B .  The IP service labels of the failed adapters relocate the surviving adapters. C .  Nothing because the resource groups wait for the adapters to become active again. D .  The resource groups containing the IP labels of the failed adapters migrate to a backup node.

A .  The command fails unless you specify the FORCE option. B .  The command fails unless you specify the REUSE option. C .  The command must be reissued with a more specific discovery string. D .  The other disks， already part of the disk group，are ignored.

A . program B . portfolio C . projectoflargesize D . PMO

Watch towers are being established along the beaches, manned by professional divers, equipped with binoculars to scan for any sign of sharks. Swimmers will have to remain within designated areas, and rules against feeding sharks or any other sea life are being reinforced. The international shark experts concluded that recent attacks were carried out by more than one shark, so waiting until the culprit was caught seems not to have been an option before opening the beaches, especially as the peak Christmas season approaches. But tourists may be understandably nervous and at least some cancellations are reported. 26. What probably happened before the re-opening of the beach？_________ A. It must have been destroyed by a rainstorm. B. It must have been visited by a dangerous shark. C. Some people must have come here for suicidal. D. There must have been a serious pollution. 27. Which of the following is NOT correct？_________ A. International experts surveyed the beach before its reopening. B. Patrol boats are used to keep the beach under close watch. C. People are not allowed to come to the beach. D. Tourists do not come to the beach any longer. 28. Which of the following is NOT included in the safety measures？__________ A. Patrol boats. B. Watch tower. C. Professional divers. D. International experts. 29. What can people do after the reopening of the beach？_________ A. Swim in designated area. B. Feed sea animals except sharks. C. Celebrate Christmas with professional divers. D. Learn how to dive from professional divers. 30. Which of the following is correct？_________ A. Several sharks may attack together. B. Sharks only attack at night. C. The beach will be reopened till the culprit is caught. D. The international shark experts patrol the beach every day.

And they travel through a universe so large that one star seldom comes near to another. For the most part each star makes its journey in complete loneliness, like a ship on an empty ocean. The ship will be well over a million miles from its nearest neighbor. From this it is easy to understand why a star seldom finds another anywhere neat it. We believe, however, that some two thousand million years ago, another star wandering (漫游) through space, happened to come near our sun, Just as the sun and the moon raise tides (潮汐) on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; a large tidal wave must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance (动荡) came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and threw off small parts of itself into space. These small pieces have been going round the sun ever since. They are the planets (行星). 第47题：Millions of stars are ________. [A] following a regular path in space [B] moving about without a fixed course [C] seldom wandering about in the universe [D] always travelling together

A．YES B．NO C．NOT GIVEN

We believe, however, that some two thousand million years ago, another star wandering through space, happened to come near our sun. Just as the sun and the moon raise tides on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; a large tidal wave' must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance (动荡) came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and threw off small parts of itself into space. These small pieces have been going round the sun ever since. They are the planets (行星). Millions of stars are______. A．following a regular path in space B．always travelling together C．seldom wandering about in the universe D．moving about without a fixed course

Using placebos to test drugs sometimes has a surprising result. Researchers say people taking the placebo often report improvements in their health. This is known as "the placebo effect"--pain that is eased or stopped by an inactive substance. In such testing, the drug must perform. better than the placebo to prove that it is effective. Doctors have reported that the placebo effect can be used in treatment. For example, a doctor tells a patient that a new drug will stop the pain in his leg. The pill is only sugar. But the patient does not know that. He takes the pill and says his pain is gone. Scientists are beginning to discover some physical reasons for this reaction in some people. They are learning that much of what people believe to be true comes from what the brain expects is going to happen. If the brain believes a drug will ease pain, the brain may begin physical changes in the body that can cause the expected effect. A recent examination of studies on drugs for depression found that placebos eased the depression about as well as the active drugs. Other studies have explored the power of placebos. A study in Japan involved thirteen people who reacted to the poison ivy (常青藤)plant. Poison-ivy causes red itchy sores(伤痕)on some people who touch it. Each person was rubbed on one arm with a harmless leaf, but was told it was poison ivy. Each person was then touched on the other arm with poison ivy, but was told it was a harmless leaf. All thirteen people developed a reaction on the arm where the harmless leaf touched their skin. Only two reacted to the poison ivy leaves. Doctors and scientists worry that the use of placebos may not always be harmless. They say people can become victims of false doctors and others who use placebos to claim they can cure disease. What do medical researchers usually use to make placebo pills？ A．Ivy leaves. B．Harmless leaves. C．Medicine being tested. D．sugar.

When our population is so small that all our labor can be engaged in the group represented by A, productivity of labor (and therefore wages) will be at their maximum. When our population increases so that some of the labor will have to be set to work in group B, the wages of all labor must decline to the level of the productivity in that group. But no employer, without government aid, will yet be able to afford to hire labor to exploit the opportunities represented by C and D, unless there is a further increase in population. But suppose that the political party in power holds the belief that we should produce every thing that we consume, that the opportunities represented by C and D should be exploited. The commodities that the industries composing C and D will produce have been hitherto obtained from abroad in exchange for commodities produced by A and B. The government now renders this difficulty by placing high duties upon the former class of commodities. This meads that workers in A and B must pay higher prices for what they buy, but do not receive higher prices for what they sell. After the duty has gone into effect and the prices of commodities that can be produced by C and D have risen sufficiently, enterprisers will be able to hire labor at the wages prevailing in A and B, and establish industries in C and D. So far as the remaining laborers in A and B buy the products of C and D, the difference between the price which they pay for those products and the price that they would pay if they were permitted to import those products duty-free is a tax paid not to the government, but to the producers in C and D, to enable the latter to remain in business. It is an uncompensated deduction from the natural earnings of the laborers in A and B. Nor are the workers in C and D paid as much, estimated in purchasing power, as they would have received if they had been allowed to remain in A and B under the earlier conditions. When C and D are established, workers in these industries______. A．receive higher wages than do the workers in A and B B．receive lower wages than do the workers in A and B C．are not affected so adversely by the levying of duties as are workers in A and B D．receive wages equal to those workers in A and B

A.whole class work B.pair work C.group work D.individual work 此题为多项选择题。

A．controller B．prompter C．organizer D．participant