1、判断题：The boy liked to go to school.（ ）选项：A:错B:对答案: 【错】
2、判断题：The boy’s father promised to pick him up when school was over, but he didn’t. （ ）选项：A:对B:错答案: 【对】
3、...
1、单选题：
【原文】Within the complex social structure of the scientific community, researchers make discoveries; editors and reviewers act as gatekeepers by controlling the publication process; ot...
