Better Control of TB Seen If a Faster Cure Is Found The World Health Organization estimates that about one-third of all people a

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问题                     Better Control of TB Seen If a Faster Cure Is Found
The World Health Organization estimates that about one-third of all people are infected with bacteria that cause tuberculosis. Most times, the infection remains inactive. But each year about eight million people develop active cases of TB, usually in their(51). Two million people die(52)it. The disease has(53)with the spread of AIDS and drug-resistant forms of tuberculosis.
Current treatments take at least six months. Patients have to(54)a combination of several antibiotic drugs daily. But many people stop(55)they feel better. Doing that can(56)to an infection that resists treatment. Public health experts agree that a faster-acting cure for tuberculosis would be more effective. Now a study estimates just how(57)it might be. A professor of international health at Harvard University led the study. Joshua Salomon says a shorter treatment program would likely mean not just more patients(58). It would also mean(59)infectious patients who can pass on their infection to others.
The researchers developed a mathematical model to examine the effects of a two-month treatment plan. They(60)the model with current TB conditions in Southeast Asia. The scientists found that a two-month treatment could prevent about twenty percent of new cases. And it might(61)about twenty-five percent of TB deaths. The model shows that these(62)would take place between two thousand twelve and two thousand thirty. That is, if a faster cure is developed and in wide use by two thousand twelve.
The Word Health Organization(63)the DOTS program in nineteen ninety. DOTS is Directly Observed Treatment, Short-course. Health workers watch tuberculosis patients take their daily pills to make(64)they continue treatment.
Earlier this year, an international partnership of organizations announced a plan m expand the DOTS program. The ten-year plan also aims to finance research(65)new TB drugs. The four most common drugs used now are more than forty years old. The Global Alliance for TB Drug Development says its long-term goal is a treatment that could work in as few as ten doses.

选项 A、cured
B、to cure
C、being cured
D、having been cured

答案A

解析 本句考查的是语法。根据所给的动词,我们可以猜到本句想说的是“Joshua Salomon说,疗程较短的治疗计划可能意味着不仅仅是更多病人被治好”。这里从语法分析,应该是缺一个定语修饰patients。cure是一个及物动问,病人应是被治疗者。B项to cure不能表示被动;C和D虽然有表示被动的意思,但是C是“正在被治疗”,D是“已经被治疗”,两者隐含的时态在这里均不合适,只有A才是恰当的。
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