第4题: [单项选择]I______ the book. I may well borrow one from the library. A. need to have bought B. need have bought C. needed not bought D. needn’’t have bought 参考答案:D 答案解析:此题考查情态动词 need在虚拟语气中用法。needn’’t have done sth.表示已做了不必做的事,意为“本不该做某事”。
第9题: [单项选择]引起霍乱样水样泻的大肠埃希菌是() A. 肠侵袭性大肠埃希菌(EIEC. B. 肠毒素性大肠埃希菌(ETEC. C. 肠致病性大肠埃希菌(EPEC. D. D.肠出血性大肠埃希菌(EHE E. E.肠凝聚性大肠埃希菌(EaggE 参考答案:B 答案解析:1.肠毒素性大肠埃希菌(ETEC)产生的肠毒素与霍乱肠毒素同源性达75%,可使肠黏膜细胞内水、钠、钾等分泌亢进而致水样腹泻。 2.肠致病性大肠埃希菌(EPEC)不产生肠毒素,主要在婴幼儿、十二指肠和空
第17题: [单项选择]A. Lending covenants now are often made at compound interest. B. Lending transactions now are often made at compound interest. C. Lending decisions now are often made at compound interest. D. Lending proposals now are often made at compound interest. 参考答案:B 答案解析:[解析] More common for lending transactions today is compound interest.
录音指“现今复利对于贷款交易更加常见”
第18题: [多项选择]设备价格的类型包括()。 A. 成本价格 B. 出厂价格 C. 市场价格 D. 收益价格 E. 清算价格 参考答案:A, C, D, E