gE为（）。

A:单体 B:二聚体 C:三聚体 D:四聚体 E:五聚体

总能（GE）

GPON F822设备上BCM芯片有四个GE接口，其中直接连接外部设备的是（）？

A:GE0 B:GE1 C:GE2 D:GE3

采用骑墙方案时，所有单板的GE0以下说法正确的是？（）

A:所有单板的GE0必须在同一网段 B:所有单板的GE0不必在同一网段 C:所有单板的GE0必须在同一网段，GE1可以不在同一网段 D:所有单板的GE0不必在同一网段，但GE1必须在同一网段

The way (which) the different kinds of rock (lie on) (one another) helps to tell the story (of long ago).（　）

A:which B:lie on C:one another D:of long ago

Do you find getting up in the morning so difficult that it’s painful This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.
During the hours When you labor through your work you may say that you’ re hot. That’s true. The time of day when you feel most energetic is when your cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues(自言自语) as: "Get up, John! You’ll be late for work again!" The possible explanation to the trouble is that John is at his temperature-and-energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energy cycles mean, and which cycle each member of the family has.
You can’t change your energy cycle, but you can learn to make your life fit it better. Habit can help. Dr. Kleitman believes. Maybe you’ re sleepy in the evening but feel you must stay up late anyway. Counteract(对抗) your cycle to some extent by habitually staying up later than you want to. If your energy is low in the morning but you have an important job to do early in the day, rise before your usual hour. This won’t change your cycle, but you’ll get up steam and work better at your low point.
Get off to a slow start, which saves your energy. Get up with a leisurely yawn(呵欠) and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Where ever possible, do routine work in the afternoon and save tasks requiring more energy or concentration for your sharper hours.

Which of the following statements is NOT true（　）

A:Getting off to work with a minimum effort helps save one's energy. B:Dr. Kleitman explains why people reach their peaks at different hours of day. C:Habit helps one adapt to his own energy cycle. D:Children have energy cycles, too.

Do you find getting up in the morning so difficult that it’s painful This might be called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.
During the hours When you labor through your work you may say that you’ re hot. That’s true. The time of day when you feel most energetic is when your cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues(自言自语) as: "Get up, John! You’ll be late for work again!" The possible explanation to the trouble is that John is at his temperature-and-energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energy cycles mean, and which cycle each member of the family has.
You can’t change your energy cycle, but you can learn to make your life fit it better. Habit can help. Dr. Kleitman believes. Maybe you’ re sleepy in the evening but feel you must stay up late anyway. Counteract(对抗) your cycle to some extent by habitually staying up later than you want to. If your energy is low in the morning but you have an important job to do early in the day, rise before your usual hour. This won’t change your cycle, but you’ll get up steam and work better at your low point.
Get off to a slow start, which saves your energy. Get up with a leisurely yawn(呵欠) and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Where ever possible, do routine work in the afternoon and save tasks requiring more energy or concentration for your sharper hours.

Which of the following statements is NOT true（）

A:Getting off to work with a minimum effort helps save one's energy. B:Dr. Kleitman explains why people reach their peaks at different hours of day. C:Habit helps one adapt to his own energy cycle. D:Children have energy cycles, too.

David helps his mother with the housework every Saturday for about ______.

A:one and half hours B:a half and an hour C:an hour and half D:one and a half hours

How sleep helps US consolidate memories is still largely a mystery. A recent study from the University of Liibeck, in Germany, offers one clue-Subjects were given a list of 46 word pairs to memorize, just before sleep. Then when they reached the deepest stages of sleep, electrical currents were sent through electrodes on their" heads to induce very slow brain waves. Such slow waves were induced at random in the brains of one group of subjects, but not another.
The next morning, the slow-wave group had better recall of the words. Other types of memory were no| improved, and inducing the slow waves later in the night did not have the same eftect. Why and how the slow waves improved memory is not yet understood, but they are thought to alter the strengths of chemical connections, or synapses, between specific pairs of nerve cells in the brain. Memories are "stored" in these synapses: changing the strength of the synapses increases the strength of the memories they store.
It’s not just memory that is improved by sleep. Recent studies indicate that sleep riot only helps store facts, it also helps make connections between them. Ullrich Wagner arid colleagues in Germany used a puzzle in which players were given a string of numbers, and required to make a series of seven calculations based on these numbers. The seventh calculation (which depended on the preceding six) was the" answer. "Participants repeatedly played the same game with the same roles, but different sets of numbers.
The researchers structured the game such that the second calculation always gave the same answer as the seventh calculation-the final answer. If players recognized this rule, they could get to the final answer much faster. Sonic of the players played the game in the morning, then did other things for eight hours or so, then played the game again. Others played the game first in the evening, then slept, then played it again alter awakening. The players who slept were almost three times more likely to have the insight that allowed them to spot the rule.
Why is this important Some sleep researchers believe that for every two hours we spend awake, the brain needs an hour of sleep to figure out what all these experiences mean, and that sleep plays a crucial role in constructing the meaning our lives come to hold. Breakdowns in such sleep-dependent processing may contribute to the development of depression, and may explain why some people who experience horrific traumas go on to develop post-traumatic stress disorder.
Apart from helping store facts, sleep also

A:helps analyze facts and draw conclusions. B:helps transform short-term memory into long-term. C:helps make logical induction and deduction. D:helps make connections between them.

C Scientists find that hard-working people live longer than average men and women. Career women are healthier than housewives. Evidence shows that the jobless are in poorer health than jobholders. Why is work good for health It is because work keeps people busy away from loneliness. Researches show that people feel unhappy, worried and lonely when they have nothing to do. Instead, the happiest are those who are busy. Many high achievers who love their careers feel that they are happiest when they are working hard. Work serves as a bridge between man and reality. By work people come into with each other. By collective activity they find friendship and warmth. This is helpful to health. The loss of work means the loss of everything. It affects man spiritually and makes him ill. Besides, work gives one a sense of fulfillment and a sense of achievement. Word makes one feel his value and status in society. When a writer finishes his writing or a doctor successfully operates on a patient or a teacher sees his students grow, they are happy beyond words. From the above we can come to the conclusion that the more you work the happier and healthier you will be. Let us work hard and study and live a happy and healthy life.Which of the following statements is TRUE according to Paragraph 2

A:Busy people have nothing to do at home. B:High achievers don’t care about their families. C:There is no friendship and warmth at home. D:A satisfying job helps to keep one healthy.