对没有工资收入的学生，在暑期参加由学校组织的红色旅游团，经市

搜题请搜索小程序“爱下问搜题”

问题单项选择题

对没有工资收入的学生，在暑期参加由学校组织的红色旅游团，经市（地）级以上政府教育部门批准后，持该部门证明购买团体票时，铁路部门给予硬座票价（）%的优惠。

A.20

B.15

C.10

D.50

答案

参考答案：A

改错题

第二部分：单句改错（满分10分）

91．People love to get together to eat and have a fun with each other． 91．__________

92．He was not going to hold his breathe for her to apologize． 92．__________

93．He could not have Yong Hui getting away to telling people lies． 93．__________

94．It would be better if you were a bit thin． 94．__________

95．They see a penniless young man wandered on the pavement． 95．__________

96．I saw a man dressed in rag the other day． 96．__________

97．They gave performances in pubs, for that they were paid in cash． 97．__________

98．Imagine our excitement when we heard it on the radio the first time． 98．__________

99．The carpet raised and at once they were in a thick rainforest． 99．__________

100．The coffee is excellent quality and has been sold very well． 100．__________

单项选择题

亚硝酸钠滴定法中将滴定尖端插入液面下约2/3处，滴定被测样品。其原因是

A．避免亚硝酸挥发和分解
B．防止被测样品分解
C．防止重氮盐分解
D．防止样品吸收CO₂
E．避免样品被氧化