单选题:根据以下材料,回答题。According to the passage, some engineers are tryi 题目分类:理工类 题目类型:单选题 查看权限:VIP 题目内容: 根据以下材料,回答题。According to the passage, some engineers are trying to improve the handlebars because A.they are not noble enough.B.they may kill children.C.they are likely to crash. D.they make the bike move at a low speed. 参考答案: 答案解析:
请在(52)处填上最佳答案。 请在(52)处填上最佳答案。A.automatically B.accidentally C.tremendously D.usually 分类:理工类 题型:单选题 查看答案
根据以下材料,回答题。请在(51)处填上最佳答案。A. tryB. tried C. trying D. h 根据以下材料,回答题。请在(51)处填上最佳答案。A. tryB. tried C. trying D. having tried 分类:理工类 题型:单选题 查看答案
The project funded by the National Science Foundation The project funded by the National Science FoundationA.was first proposed by som 分类:理工类 题型:单选题 查看答案