物体受水平拉力的作用，在粗糙水平面上做勻速直线运动，要想通过测量求出拉力对物体所
题型：选择题
问题：
物体受水平拉力的作用，在粗糙水平面上做勻速直线运动，要想通过测量求出拉力对物体所做的功，应选取的一组器材为（ ）
A．刻度尺、秒表
B．量筒、天平
C．压强计、烧杯
D．弹簧测力计、刻度尺
题型：选择题
阅读理解
The gray-haired lady can't wait to leave the building to search for her dad .Unless watched ,she
will walk in the streets in an effort to find her father ,who died 30years a
go.
Not all cases of Alzheimer's disease look like this ,but Alzheimer's is a serious disease that is said
to be the fourth or fifth leading cause of death for
people over age 75.
It is said that about three percent of the U.S. population over age 65 have Alzheimer's .In the
early stages ,people may exhibit short term memory loss. Some may experience changes in personality ,
easy to be angry .As the disease progresses ,patients might lose the ability to move and may be unable
to speak or move at all. This progressive disease generally lasts 8 to 10 years before death occurs.
While no one is certain what causes these changes in the brain's nerve fibers (神经纤维),their effect
is certain .Alzheimer's destroys not only the patients ,but also spouses(配偶),friends and families.
What should you do if you notice progressive memory loss in yourself or a loved one? Have the
person examined by a doctor who is a specialist in the treatment of Alzheimer's disease.
Though many reasons other than Alzheimer's disease may cause memory loss ,its early diagnosis(诊
断)and treatment may delay some of the most serious effects.
What feeling will you likely experience should a loved one suffer from Alzheimer' s disease? A person will often go through the various stages of sadness, shock, anger, and so on. If the spouse develops the
disease, you may experience hurt and disappointment when he or she doesn't remember you are married.
Life for the Alzheimer's patients and their loved ones will never be the same as the disease progresses ,bringing a deep sorrow ,loss and even anger towards God .No matter what feelings are present ,facing
them honestly will serve one better than burying them.
1. What can be inferred from the passage about the gray-haired day?
A. She has been living with her father.
B. She was sad about the death of her father.
C. She can't sear
ch for her father without being watched.
D. She suffers from Alzheimer's disease.
2. When people suffer from Alzheimer's disease , ________.
A. their families and friends will suffer from the same disease
B. their families and friends will experience mental sufferings
C. they will certainly die in 8 to 10 years
D. they will forget everybody but their spouses
3. Memory loss occurs ________.
A. from Alzheimer's disease and nothing else
B. from sadness ,shock ,anger ,and so on
C. for a number of reasons
D. with changes in personality
4. From the passage we know that_____.
A. early treatment may stop Alzheimer's disease occurring
B. it is still unknown what causes the changes in the brain's nerve fibers
C. nerve fibers in the brain will cause Alzheimer's disease
D. when one suffers from Alzheimer's disease ,he will be buried