NieolaWaiters has been

共享题干题                                                                   （一）
                                                             The Weight Experiment
阅读下面的材料，回答下列的问题：
（1）NieolaWaiters has been taking part in experiments in Scotland to discover why humans gainand lose weight. being locked in asmall room called a" calorimeter" (热量测量室)is one way tofind out. The signs above the two rooms read simply" Chamber One" and" Chamber Two", theseare the calorimeters: 4m by 2m white-walled rooms where human volunteers are locked up in thename of science. Outside these rooms another sign reads," Please do not enter-work in progress"and in front of the morns advanced machinery registers ( 记录 ) every move the volunteers make. Each day, meals measured to the last gram are passed through ahole in the wall of the calorimeterto the resident volunteer.
（2）NieolaWaiters is one of the twenty volunteers who, over the past eight months, have spent va-rying periods inside the calorimeter. Tall and slim, Nicoladoes not have aweight problem, butthought the strict diet might help her with training and fitness program.aself-employed communi-ty dance worker, she was able to fit the experiment in around her work. She saw an advert( 广告)for volunteers at her gym and as she is interested in the whole areaof diet and exercise, shethought she would help out.
（3）The experiment on Nieolainvolved her spending one day on afixed diet at home and the nextin the room. This sequence(次序) was repeated four times over six weeks. She arrived at the calo-rimeter at 8:30 a. m. on each of the four mornings and from then on everything she ate or drankwas carefully measured. Her every move was noted too, her daily exercise routine timed to the lastsecond. At regular intervals, after eating, she filled in forms about how hungry she felt and sam-ples were taken for analysis.
（4）The scientists helped volunteers impose(g确立) akind of order on the long days they faced inthe room. "The first time, I only took one video and abook. but it was OK, because I watched TVthe rest of the time," says Nicola. And twice aday she used the exercisebike. She pedaled(踩踏板) for half an hour, watched by researchers to make sure she didn't go too fast.
（5）It seems that some foods encourage you to eat more, while others satisfy you quickly. Volun-teers are already showing that high-fat diets are less likely to make you feel full. believing thatthey may now know what encourages people to overeat, the researchers are about to start testing ahigh-protein weight-loss diet. Volunteers are required and Nicolahas signed up for further ses-sions.