题目内容：

The results of an admittedly small but telling new study suggest that Medicare and other insures could be spending billions of dollars on screening(拍片检查)smokers for lung cancer that would be better spent on helping them quit and keeping others from starting．The new study indicated that screening more often supported smokers’ beliefs that they could safely continue to smoke．Most participants remained smoker because they believed screening could catch cancer early before it would threaten their lives.

“They compared how hard it was to quit smoking with how easy it was to be screened，”said Steven B. Zeliadt, the lead author of the study. "They engaged in magical thinking that now there's this wonderful painless external test that can save lives."

He and seven colleagues conducted the study of 37 current smokers who were offered lung cancer screening at Department of Veteran Affairs. After being screened and told the results. they were interviewed about their smoking-related health beliefs. For about half of those in whom cancer was not found. "Screening lowered their motivation for quitting." the team reported in July in JAMA Internal Medicine. The participants focused only on lung cancer, ignoring other potential harm of smoking. the researchers wrote.

A national study published four years ago found that annual CT screening for lung cancer three years in a row could reduce deaths among heavy smokers by about 20 percent.In an interview, Dr. Russell P. Harris, a preventive medicine specialist at the UNC-Chapel Hill. noted that "screening is being believed by people as an alternative to stopping smoking. But stopping smoking would have huge benefits for the individual and society." Furthermore, smoking causes many other cancers.

Dr. Harris agreed that rather than screening money is better spent on smoking prevention. He suggested providing free stop-smoking aids. sponsoring anti-smoking advertising and raising taxes on tobacco products and the age at which people are allowed to buy them.

1.What does the new study suggest?

A. Screening technology remains to be advanced and more effective.

B. Screening can find cancer in patients and give them timely treatment.

C. Helping people quit smoking is better than screening them for cancer.

D. Admitting smoking before screening can help one to stop smoking.

2.What effect can screening have on most smokers?

A. They will be scared by the result and quit smoking.

B. They will believe screening can catch cancer early and not quit.

C. They will lose hope and go on smoking.

D. They will know screening costs less than smoking.

3.What does the underlined word“they”（in Paragraph 5）refer to?

A. The smokers screened in the study.

B. Steven Zeliadt and his colleagues.

C. Dr. Harris and his patients.

D. The patients' smoking-related health beliefs

4.Which of the following can be a suitable title for the passage?

A. The Effect of Screening for Cancer Patients

B. Screening Alone Doesn’t Do the Work

C. Screening Has a Say in Cancer Detecting

D. Screening May Not Push Smokers to Quit