The outbreak of a disease is harder to control because______. A.individual health problem is ignored by both the government and the tourists B.the way people travel today has become more complex C.there is lack of international cooperation D.it is often infectious in nature
A.A.individual B.the C.there D.it
【参考答案】
B 解析：本题为细节题。解题的关键是第三段第二句话： “The growing intensity and co......