第34题: [填空题]S9 参考答案:Your eyes need to practice moving quickly across the page from left to right,and your mind needs to practice making quick associations between the printed words and meanings. 答案解析:前句已经说到:你需要练习眼力和脑力,所以这句的主语是Your eyes和your mind,注意动词搭配:moving quickly across和making quick associations
第35题: [单项选择]血中激素含量甚微,但其生理作用显著,这是因为 A. 激素的高效能生物放大作用 B. 激素的半衰期非常长 C. 激素分泌的持续时间非常长 D. 激素的特异性很高 E. 激素在体内随血液分布全身 参考答案:A