第3部分：概括大意与完成句子 （第23-30题，每题1分，共8分） 
阅读下面这篇短文，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2、3、5和6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。请将答案涂在答题卡相应的位置上。 

The Weight Experiment 
Nicola Walters has been taking part in experiments in Scotland to discover why humans gain and lost weight. Being locked in a small room called a ’calorimeter’（热量测量室)is one way to find out. 

1    The sighs 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 Walters 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 () 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. 

23    Paragraph 1____________ 
24    Paragraph 1____________ 
25    Paragraph 1____________ 
26    Paragraph 1____________ 
27    The machinery outside the calorimeters records everything___________. 
28    Nicola Walters had time for the experiments________________. 
29    Volunteers have to get prepared for the time in the calorimeter____________. 
30    The experiments show that high-fat diets_____________. 
A  the volunteers do 
B  because she does not have a weight problem 
C  because the life there can be very boring 
D  make people overeat 
E  because she was her own boss 
F  after passing a high-protein test 

第4部分：阅读理解（第31-45题，每题3分，共45分） 
    下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请根据文章的内容，从每题所给的4个选项中选择1个最佳答案，涂在答题卡相应的位置上。 

第一篇    "Salty" Rice Plant Boosts Harvests 
British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more. 
Tim Flowers and Tony Yeo, from Sussex University’s School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty. 
The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice. 
It is estimated that each year more than 100 hectares (公顷) of agricultural land are lost because salt gets into the soil and stunts (妨碍生长)plants. The problem is caused by several factors. In the tropics, mangroves (红树林) that create swamps (沼泽) and traditionally formed barriers to sea water have been cut down. In the Mediterranean, a series of droughts have caused the water table to drop, allowing sea water to seep (渗透) in. in Latin America, irrigation often causes problems when water is evaporated (蒸发) by the heat, leaving salt deposits behind. 
Excess salt then enters the plants and prevents them functioning normally. Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive. 
To overcome these problems, Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants’ growth. They have started to breed these characteristics into a new rice crop, but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use. 
Once the characteristics for surviving salty soil are known, Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants. Land that has been abandoned to nature will then be able to bloom again, providing much needed food in the poorer countries of the world. 

31    Which of the following statements about Flowers and Yeo is true? 
A    They are students at Sussex University. 
B    They are rice breeders. 
C    They are husband and wife 
D    They are colleagues at an institution of higher learning. 

32    Flowers and Yeo have started a programme 
A    to find ways to prevent water pollution. 
B    to identify genes that promote growth in salty soil. 
C    to breed rice plants that taste salty. 
D    to find ways to remove excessive salt from soil. 

33    Which of the following is NOT mentioned as a cause of the problem discussed in the passage? 
A    Natural barriers to sea water have been destroyed. 
B    The water table has gone down after droughts. 
C    Sea level has been continuously rising. 
D    Evaporation of water leaves salt behind. 

34    The word "affect" in Paragraph 6 could be best replaced by 
A    "influence" 
B    "effect" 
C    "stop" 
D    "present" 

35  The attitude of the author towards the research project is 
A    positive 
B    negative. 
C    suspicious 
D    indifferent. 

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