A new study suggests that the way to weight loss may be clear.A couple of glasses of water before meals help dieters lose about 5 pounds more than those who do not drink water.While drinking water before a meal may fill a person up，the contents of their meal are important as well.Should a person be eating a low－fat diet or a lowcarbohydrate (低糖的) diet? Or does it matter at all?
Recent research suggests that one diet isn’t any better than the other.A few weeks before the water study，another concluded that lowfat and lowcarbohydrate diets tied in weight loss.While the lowcarbohydrate dieters did show a slight increase in good cholesterol (胆固醇) and a reduction in blood pressure，there was not much difference in the dieters’weight loss.The point here is that the person had to stick to the diet.What helps a person see a diet through? It could be body type.
A study published in the Journal of the American Medical Association，as reported by Timemagazine，found that body shape is the key to which diet a person will be able to stick with.Apples are people who carry most of their weight above the belt，while pears carry their weight around their hips (臀部)．Apple types were more likely to be highinsulin secretors (高胰岛素分泌者) who respond more strongly to carbohydrates in their bodies.They lost the most weight on a lowcarbohydrate diet.Pears were lowinsulin secretors who lost the same amount of weight on both diets.Unstable (不稳定的) insulin levels can create stronger hunger senses，causing the apple types to go off their diet plans.
All of these studies again come down to choosing the diet that helps you eat less.The bodytype diet does make some sense as men are more likely to be apple types，with larger stomachs，and tend to do well on higherprotein diets，while women，who tend to carry weight around their hips，find themselves drawn to the lowfat diets.The reality is if a diet is failing you try another one.A plan you can’t，or won’t，stick to will never work，no matter what the research says.
If you want to lose weight but don’t know what diet suits you，you can always ________.

A．drink a few cups of water after each meal

B．drink a few cups of water before each meal

C．eat plenty of pears

D．eat plenty of apples

Compared with a lowcarbohydrate dieter，a lowfat dieter may ________.

A．lose weight faster

B．put on weight faster

C．have less good cholesterol

D．have a lower blood pressure

Which of the following statements is TRUE according to the passage?

A．Women on highprotein diets usually do well in weight loss.

B．Men on highcarbohydrate diets usually do well in weight loss.

C．Men usually like eating apples while women mostly enjoy pears.

D．Whether a person can stick with a diet depends largely on his or her body shape.

In the author’s opinion，________.

A．men don’t get hungry as easily as women

B．apple types work better than pear types in weight loss

C．the result of the recent research is not of much value

D．strong will as well as proper methods is the key to weight loss