题目内容：
回答题：Promising Results from Cancer Study A new experimental vaccine (疫苗) has shown promising results ir the fightagaiast lung cancer. In a small Texas-based study, a vaccine developed byscientist: at Baylor University MedicalCentre in Dallas, USA, cured lung cancer in some patients and slowed theprogress of the disease in others.
Researchers have reported encouraging findings from this small stud '. Forty-three patientssuffering from lung cancer were involved in these trials. Ten of these patlentswere in the early stages and thirty-three in the advanced stages of thedisease. They were in ected with the vaccine every two weeks for three months,and were carefully monitored for three years. In three of the patients in theadvanced stages of cancer, the disease disappeared and in the others, it didnot spread for five to twenty-four months. However, no great difference wasseen in the padents in the early stages of the illness.
This new vaccine uses the patients' own immune system. It is made specifically for eachpatient and is injected into the arm or leg. It stimulates the body's immunesystem, which then recognizes that the cancer ceils are harmful, and attacksand destroys them.
The vaccine could be effective against other forms of cancer. It offers great hopefor the treatment of cancer in general, although further studies are neededbefore such treatment can be widely used.
Thevaccinecuredalltheparticipantsinthetrial. A．Right
B．Wrong
C．Notmentioned
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