A、 They contracted the disease by being with the infected people.
B、 They contracted the disease by breathing the contaminated dust.
C、 They contracted the disease by drinking the contaminated water.
D、 They contracted the disease by eating the contaminated food.

【正确答案】 B

【答案解析】解析：文章首段末句指出人们因为呼吸the dust from the dried waste of the infected mice or rats而染上疾病的，故B项正确。

A、 High fever.
B、 Headaches.
C、 Pain in muscles and joints.
D、 Stomach.

【正确答案】 D

【答案解析】解析：根据第二段首句可知，前三项都是这种疾病的症状。

A、 The sickness can not spread from one person to another.
B、 The people who get the sickness have high fever and headaches.
C、 The patients didn" t go to see doctor in time.
D、 The doctors didn" t treat the patients in time.

【正确答案】 C

【答案解析】解析：第二段提到当出现症状时，人们只是以为是一般的感冒，并没有寻求及时治疗，从而延误了治疗时间，致使大量人死亡，故C项正确。

A、 More people are gathering to celebrate holidays.
B、 More and more people have moved to the south of Argentina.
C、 Weather changes.
D、 Environmental changes.

【正确答案】 D

【答案解析】解析：末段提到阿根廷负责健康的官员认为这种病毒可能在野生老鼠身上存在了多年，但是因为近期气候的变化迫使这些老鼠进入了居住区，从而引起染病人数的迅速增加，故D项正确。

A、 Argentina.
B、 Brazil.
C、 Paraguay.
D、 Uruguay.

【正确答案】 D

【答案解析】解析：前三项均是文中谈到的遭受过这种疾病的国家，D项(乌拉圭)没有被提及。