A. they become more professional than ever B. they regard sports as consumer goods C. there exist few world-class championships D. sports events are exciting and stimulating 参考答案:B 答案解析:推理题。在最后一段中,我们知道“our choice of sports as consumers also grows”,既然我们都成了体育消费者,所以体育自然就是“消费品”了。可见B是正确的。
第20题: [单项选择]The business of each day, ______ selling goods or shipping them, went quite smoothly. A. it being B. be it C. was it D. it was 参考答案:B 答案解析:[解析] 让步状语从句也可用来表示虚拟语气结构,其形式为whether…be,有时可将whether。省去,把be提前。
第26题: [单项选择]关于霍乱红试验不正确的说法是() A. 与靛基质试验相同之处是都分解色氨酸产生吲哚 B. 尚可还原硝酸盐为亚硝酸盐 C. 结果观察都需加入酸性试剂 D. 颜色改变均为红色 E. 为霍乱弧菌鉴定的特有试验 参考答案:E 答案解析:霍乱弧菌呈阳性反应,但本试验并非霍乱弧菌所特有。凡能产生吲哚并还原硝酸盐为亚硝酸盐的细菌,均可呈现阳性反应。