第1题: [单项选择]This is the second letter that he ______ his brother recently. A. has got to B. has heard of C. has received from D. has heard from 参考答案:C 答案解析:此题检测对短语to receive from和to hear from的掌握情况。可以说to receive a letter但不能说hear from a letter，只能说to hear fro
第6题: [单项选择]Sometimes children have trouble ______fact from fiction and may believe that such things actually exist. A. to separate B. separating C. for separating D. of separating 参考答案:B 答案解析:have trouble (in) doing sth．是固定搭配，作“做某事有困难”讲，短语中介词in可以省略。例如： Andy is one of the students who have tr
第7题: [单项选择]急性重型肝炎的病理特点是（） A. 肝细胞灶状坏死 B. 肝细胞碎片坏死 C. 肝细胞桥接坏死 D. 肝细胞大片坏死 E. 肝细胞亚大片坏死 参考答案:D
