[单项选择]Questions 26 to 28 are based on the passage you have just heard. A. A very popular food plant. B. A plant with limited uses. C. A food plant which has been used. D. A plant used as a main food.
参考答案:D 答案解析:[听力原文] What is coconut according to the passage
第4题: [单项选择]纤维蛋白降解产物的主要作用是 A. 促进凝血酶的活性 B. 防止血小板的激活 C. 对抗血液凝固 D. 促进纤维蛋白单体聚合 E. 抑制纤维蛋白溶解 参考答案:C 答案解析: ①纤维蛋白被分解液化的过程称为纤维蛋白溶解(纤溶)。纤溶酶原在激活物作用下,转变为纤溶酶。在纤溶酶作用下,纤维蛋白(纤维蛋白原)可被分解为许多可溶性小肽,称纤维蛋白降解产物。纤维蛋白降解产物通