PeoplewhobreatheinfectedairfromaTBpatientcanbecomeinfectedwiththetuberculosis（肺结核）bacteria（细菌）.Howevermostpeoplewithactivetuberculosisdonotexpel（驱逐，逐出）verymanyTBbacteria.Sothesp

Question

People who breathe infected air from a TB patient can become infected with the tuberculosis（肺结核） bacteria（细菌）. However most people with active tuberculosis do not expel （驱逐，逐出）very many TB bacteria. So the spread of the disease usually does not happen unless a person spends a large amount of time with a TB patient. Those most at risk are family members friends and people who live or work closely with a patient.

Tuberculosis can attack any part of the body. However the lungs are the most common targets（目标） of the bacteria. People with the disease show several signs. They may expel air from the lungs suddenly with an explosive（爆炸性的） noise. This kind of cough continues for a long period of time. People with a more severe case of tuberculosis also may cough up blood.

People with the disease often have high body temperatures. They suffer what are called night sweats during which their bodies release large amounts of water through the skin. TB victims also are tired all the time. They are not interested in eating. So their bodies lose weight.

One thing that is especially dangerous about TB is that people with moderate（中等的） signs of the disease may not know they have had it. They may spread the disease to others without even knowing it. So it is very important for people to get tested for tuberculosis.

The spread of the TB is through__________.

A、food        B、air         C、clothes          D、touching

Family members are those most at risk to be infected with the tuberculosis bacteria _____________.

A、because they have the same bath room  B、because they have blood relationship

C、because they love each other very much  D、because they live in the same room

The common signs of TB are ___________.

A、cough or even cough with blood night sweat and tired of sleeping.

B、cough or even cough with blood night sweat and eating too much

C、cough fever feeling tired night sweat losing weight

D、cough fever feeling tired night sweat eating too much

Why may some TB patients spread the disease to others without even knowing it?

A、Because there is no sign in the early stage of the disease.

B、Because these patients don’t show any signs of the disease.

C、Because these patients’ signs of the disease are too weak to be noticed.

D、Because these patients don’t know how the disease spreads between people.

Answer 1

【小题1】B
【小题2】D
【小题3】C
【小题4】C