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lt's prudent to start any exercise program gradually at first.

A:workable
B:sensible
C:possible
D:feasible

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考题 单选题Questions 26 to 30 are based on the following passage. Exercise is one of the few factors with a positive role in long-term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to “light” beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts: for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry (小甜饼). Even exercise professionals concede half a point here. “Exercise by itself is a very tough way to lose weight,” says York Onnen, program director of the President’s Council on Physical Fitness and Sports. Still, exercise’s supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year’s time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight. What is the author’s purpose in writing this article? ()A To justify the study of the Boston University Medical Center.B To stress the importance of maintaining proper weight.C To support the statement made by York Onnen.D To show the most effective way to lose weight.

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考题 单选题Questions 26 to 30 are based on the following passage. Exercise is one of the few factors with a positive role in long-term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to “light” beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts: for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry (小甜饼). Even exercise professionals concede half a point here. “Exercise by itself is a very tough way to lose weight,” says York Onnen, program director of the President’s Council on Physical Fitness and Sports. Still, exercise’s supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year’s time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight. “Even exercise professionals concede half a point here” (Line 3, Para. 2) means “They ()”.A agree that the calories in a small piece of pastry can be difficult to work off by exerciseB partially believe diet plays a supporting role in weight reductionC are not fully convinced that dieting can help maintain one’s new weightD are not sufficiently informed of the positive role of exercise in losing weight

考题 多选题public class SyncTest{   public static void main(String args) {    final StringBuffer s1= new StringBuffer();    final StringBuffer s2= new StringBuffer();    new Thread () {    public void run() {   synchronized(s1) {   s2.append(“A”);   synchronized(s2) {    s2.append(“B”);    System.out.print(s1);    System.out.print(s2);   }   }    }    }.start();   new Thread() {   public void run() {   synchronized(s2) {  s2.append(“C”);  synchronized(s1) {   s1.append(“D”);  System.out.print(s2);  System.out.print(s1);   }   }    }   }.start();   }   }   Which two statements are true? ()AThe program prints “ABBCAD”BThe program prints “CDDACB”CThe program prints “ADCBADBC”DThe output is a non-deterministic point because of a possible deadlock condition.EThe output is dependent on the threading model of the system the program is running on.