第3部分：概括大意与完成句子（第23~30题，每题1分，共8分)下面的短文后有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个最佳标题；
(2)第27~30题要求从所给的6个选项中为每个句子确定1个最佳选项。
Parkinson's Disease I Parkinson's disease affects the way you move. It happens when there is a problem with certain nerve cells in the brain. Normally,
these nerve cells make an important chemical called dopamine (多巴胺). Dopamine sends signals to the part of your brain that controls movements. It
lets your muscles move smoothly and do what you want them to do. When you have Parkinson's, these nerve cells break down. Then you no longer have
enough dopamine, and you have trouble moving the way you want to. 2 No one knows for sure what makes these nerve cells break down. But scientists are
doing lot of research to look for the answer. They are studying many possible causes, including aging and poisons in the environment. Abnormal genes
seem to lead to Parkinson's disease in some people. But so far, there is not enough proof to show that it is always inherited. 3 Tremor (颤抖) may be
the first symptom you notice. It is one of the most common signs of the disease, although not everyone has it. Tremor often starts in just one arm or
leg or only on one side of the body. It may be worse when you are awake but not moving the affected arm or leg. It may get better when you move the
limb or you are asleep. In time, Parkinson's affects muscles all through your body, so it can lead to problems like trouble swallowing or constipation
(便秘). In the laterstages of the disease, a person with Parkinson's may have a fixed or lank expression, trouble speaking, and other problems. Some
people have a decrease in mental skills. 4 At this time, there is no cure for Parkinson's disease. But there are several types of medicines that can
control the symptoms and make the disease easier to live with. You may need to take several medicines to get the best results.
23. Paragraph 1 __________.
24. Paragraph 2 __________.
25. Paragraph 3 __________.
26. Paragraph 4 __________.
A. Means of Diagnosis of the Disease
B. Tips for Patients with the Disease
C. Common Treatment for the Disease
D. Definition of Parkinson's Disease
E. Possible causes of the Disease
F. Typical Symptoms of the Disease
27. You'll find it hard to move the way you want to __________.
28. A lot of research is being done to find out __________.
29. One of the most common signs of Parkinson's is tremor__________.
30. A person with Parkinson's has to learn to live with the disease__________.
A. what affects muscles all through your body
B. if there isn't enough dopamine in your body
C. which cannot be cured yet
D. which may be the first symptom you notice
E. if you have a fixed or blank expression
F. what causes Parkinson's disease
