国际收支是指一国在一定时期内()对其他国家和地区、由于政治、经济、文化往来而引起的绝大部分收支。()
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经飞沫传播的传染病其病原体具有对外环境抵抗力较弱的特点。()
Nearly all the doctors______upon a diet which contains a lot of fat and few vegetables.
A. disapprove
B. criticize
C. frown
D. blame
SARS, which had affected millions of people throughout the world,______doctors and public
A. complexed
B. duplexed
C. triplexed
D. perplexed