筛选试验在下列哪种情况是适宜的()。
A.患病率高的疾病
B.患病率低的疾病
C.早期诊断可改善预后的疾病
D.病情严惩难以治愈的疾病
E.病死率较高的疾病
参考答案:C
At the beginning, he started his business with only a little money, but he built it up ______. [ ]
A. gradually
B. slowly
C. exactly
D. fluently
贷款资金的支付方式分为()支付和()支付。
A.信用社受托支付
B.借款人自主支付
C.贷款人自主支付