题目内容：

    When it comes to medical care, many patients and doctors believe "more is better." But what they do not realize is that overtreatment-too many scans, too many blood tests, too many procedures-may bring harm. Sometimes a test leads you down a path to more and more testing, some of which may be attacking, or to treatment for things that should be left out.

Terrence Power, for example, complained that after his wife learned she had Wegener's disease, an uncommon disorder of the immune system(免疫系统), they found it difficult to refuse testing recommended by her doctor. The doctor insisted on office visits every three weeks, even when she was feeling well. He frequently ordered blood tests and X-rays, and repeatedly referred her to experts for even minor complaints. Even when tests came back negative, more were ordered, and she was hospitalized as prevention when she caught a cold. She had as many as 25 doctor visits during one six-month period. The couple was spending about $30,000 a year for her care.

After several years of physical suffering and near financial ruin from the medical costs, the couple began questioning the treatment after discussing with other patients in online support groups. "It's a really hard thing to determine when doctors have crossed the line," Mr. Power said. "You think she's getting the best care in the world, but after a while you start to wonder: What is the purpose?" Mr. Power then spoke with his own primary care doctor, who advised him to find a new expert to oversee Mrs. Power's care. Under the new doctor's care, the regular testing stopped and Mrs. Power's condition was stable. Now she sees the doctor only four or five times a year.

1.Which of the following was a problem for Mrs. Power during her medical treatment?

A.She had to be hospitalized for three weeks whenever she had a cold.

B.Her doctor asked her to consult other experts for her complaints.

C.When test results showed she was fine, her doctor still ordered more tests.

D.She did not have any insurance, so she became penniless.

2.When did the Powers start to doubt the treatment of Mrs. Power?

A.After they knew about the treatment of other patients.

B.After they analyzed the results of her blood tests

C.After Mrs power was cured of her illness.

D.After the new expert tested her.

3.Which of the following can replace the underlined word "stable" in the last paragraph?

A.not getting worse B.improper

C.unchangeable D.uncertain

4.What is the main idea of this passage?

A.Treatments do not always cause harmful side effects.

B.Patients tend to believe more testing is better treatment.

C.Doctors generally recommend office visits that are necessary.

D.Too much medical care may not be beneficial to patients.