根据以上病史还需进行进一步检查，下列检查中，你认为对诊断最为关键的检查是
A. 类风湿因子
B. 抗核抗体谱检查
C. 血免疫球蛋白+补体
D. C反应蛋白
The word "conjured"(Line 1, Para. 4) most probably means______.
A. disturbed
B. aroused
C. brought
D. evoked
It can be inferred from the fifth paragraph that______.
A. the travelers would like to spend more money on travel
B. the business can kill two birds with one stone by promoting eco-tourism
C. 61% Of American travelers would pay more to use eco-friendly travel companies
D. 58.5 million U.S. travelers are striving to protect environment
Ronald Sanabria held the view that certification is______.
A. the practice of promoting eco-tourism
B. a method to assess the tour company
C. a tool to avoid the irresponsibility in protecting 6nviromnent
D. a way of forcing companies m protect environment
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