阅读下而这篇短文，短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第1～4段每段选择1个正确的小标题；(2)第27～30题要求从所给的6个选项中选择4个正确选项，分别完成每个句子。 The Weight
Experiment Nicola Walters has been taking part in experiments in Scotland
to discover why humans gain and lose weight. Being locked in a small room called
a "calorimeter" (热量测量室) is one way to find out. 1 The signs above the
two rooms read simply "Chamber One" and "Chamber Two". These are the
calorimeters: 4m by 2m white-walled rooms where human volunteers are locked up
in the name of science. Outside these. rooms another sign reads "Please do not
enter - work in progress" and in front of the rooms advanced machinery registers
every move the volunteers make. Each day, meals measured to the last gram are
passed through a hole in the wall of the calorimeter to the resident
volunteer. 2 Nicola Waiters is one of twenty volunteers who, over the
past eight months, have spent varying periods inside the calorimeter. Tall and
slim, Nicola does not have a weight problem, but thought the strict diet might
help with her training and fitness programme. A self-employed community dance
worker, she was able to fit the experiment in around her work. She saw an advert
for volunteers at her local gym and as she is interested in the whole area of
diet and exercise, she thought she would help out. 3 The experiment on
Nicola involved her spending one day on a fixed diet at home and the next in the
room. This sequence was repeated four times over six weeks. She arrived at the
calorimeter at 8:30 am on each of the four mornings and from then on everything
she ate or drank was carefully measured. Her every move was noted too, her daily
exercise routine timed to the last second. At regular intervals, after eating,
she filled in forms about how hungry she felt and samples were taken for
analysis. 4 The scientists help volunteers impose a kind of order on
the long days they face in the room. "The first time, I only took one video and
a book, but it was OK because I watched TV the rest of the time," says Nicola.
And twice a day she used the exercise bike. 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.
Volunteers are already showing that high-fat diets are less likely to make you
feel full. Believing that they may now know what encourages people to overeat,
the researchers are about to start testing a high-protein weight-loss diet.
Volunteers are required and Nicola has signed up for further sessions. Paragraph 1 ______.
A What does the calorimeter look like inside
B What program was designed for the experiment
C What is a calorimeter
D What is the first impression
E How do the volunteers kill the time
F Why did Nicola join in the experiments