(Q).
Self-control can make you happier not only in the long-run, but also in the moment. The research showed that self-control isn't about giving up desires, but more about managing conflicting goals. Since most people consider highly self-controlled ones as being more task-centered, the scientists decided to find out the connection between self-control and people's happiness to determine if being self-disciplined leaves people feel less joyful. Through a set of tests-including one that assessed 414 middle-aged participants on self-control and another that randomly interviewed volunteers on their smart phones about their mood and any desires they might be experiencing, researchers found a strong connection between higher levels of self-control and satisfaction. The smart phone experiment also showed how self-control may improve mood. Those who showed the greatest self-control reported more good moods and fewer bad ones. But this didn't appear to be linked to being more able to resist temptation --it was because they exposed themselves to fewer situations that might inspire desires in the first place. They were doing a number of things that bring them happiness and avoiding problematic desires and conflicts. That became clear in the study's last experiment, which looked into how self-control affects the way people handle goals that conflict with one another. In particular, the researchers were interested in how self-disciplined and less-disciplined people differed when it came to choosing among "virtues" and "vices" like the pleasure of eating sugar cookie vs. the pain of gaining weight. Participants were asked to list three important goal conflicts they experienced regularly and were also questioned on how they managed to balance the goals. The highly self-controlled showed an obvious difference from those with less discipline over their lives. They tended to avoid creating situations in which their goals would conflict, and reported fewer instances of having to choose between short-term pleasure and long-term... According to the research, the self-controlled people   _  . A) enjoy less pleasure of life B) focus less on completing their tasks C) make others feel less delighted D) are better solving problems and conflicts
(A).
D


(Q).
A patient on the brink of death has received the world's first self--contained artificial heart--a battery--powered device about the size of a softball that runs without the need for wires,tubes sticking out of the chest.It is powered by a small battery pack worn outside the body that transmits current through the skin.     Two surgeons from the University of Louisville implanted the titanium and plastic pump during a seven-hour operation at Jewish Hospital Monday.The hospital said the patient was''awake and responsive''Tuesday and resting comibrtably.It refused to eve personal details.     The patient had been expected to die within a month without the operation, and doctors said they expected the artificial heart to extend the person's life by only a month.But the device is considered a major step toward inlproving the patient's quality of life.     The new pump,called AbioCor,is also a technological leap from the mechanical hearts used in the l980s, which were attached by wires and tubes to large machinery outside the body.The most famous of those, the Jarvic-7,used air as a pumping device and was attached to an apparatus about the size of a washing machine.     ''I think it's potentially a major step forward in the artificial heart development,''said Dr.David Faxon,president of the American heart Association.However,he said the dream of an implantable,permanent artificial heart is not yet a reality:''This is obviously an experimental device whose long--term success has to be demonstrated."Only about half of the 4,200 Americans on a waiting list for donor hearts received them last year,and most of the rest died.     Some doctors,including Robert Higgins,chairman of cardiology at the Medical College of Virginia in Richmond,said artificial hearts are unlikely to replace donor hearts."A donor heart in a good transplant can last l5 to 30 years.''he said.''It's going be hard replace that with a machine.'' The self-contained artificial heart_. A) is made of titanium and pump B) brought the patient to the brink of death C) gets power from a battery pack without wires D) was invented by two surgeons from University of Louisville
(A).
C


(Q).
What exactly is a lie ?Is it anything we say which we know is untrue ?Or is it something more than that ?For example, suppose a friend wants to borrow some money from you. You say "I wish I could help you, but I am short of money myself." In fact , you are not short of money but your friend is in the habit of not paying his debts and you don't want to hurt his feelings by reminding him of this. Is this really a lie ? Professor Jerald Jellison of the University of southern California has made a scientific study of lying. According to him, women are better liars than men, particularly when telling a "white lie", such as when a woman at a party tells another woman that she likes her dress when she really thinks it's terrible. However, this is only one side of the story. Other researchers say that men are more likely to tell more serious lies, such as making a promise that they have no intention of carrying out. This is the kind of lie politicians and businessmen are supposed to be particularly skilled at :the lie from which the liar hopes to profit or gain in some way. Research has been done into the way people's behavior changes in a number of small, unimportant ways when they lie. It has been found that if they are sitting down at the time, they tend to move about in their chairs more than usual. To the trained observer they are saying "I wish I were somewhere else now". They also tend to touch certain parts of the face, particularly the nose. One explanation of this may be that lying causes a slight increase in blood pressure. The tip of the nose  is very sensitive to changes and the increased pressure makes it itch. Another gesture that gives liars away is what the writer Decmond Morris in his bookMan Watching calls the "mouth cover". He says that there are several typical forms of this ,such as covering part of the mouth with the fingers, touching the upper lip or putting a finger of the hand at one side off the mouth. Such a gesture can be understood as an unconscious  attempt on the part of the liar to... The writer of the passage  _  . A) hates lying B) enjoys lying C) often tells a lie D) tries to study about lying
(A).

D