问题
单项选择题
调车作业模式限速值牵引40km/h、推进30km/h、连挂（）km/h。
A.20
B.10
C.5
答案
参考答案：C
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调车作业模式限速值牵引40km/h、推进30km/h、连挂（）km/h。
A.20
B.10
C.5
参考答案：C
I had always cared about sick children and tried to help them. But when my little grandson received third degree burns, I learned first-hand how a loving adult feels when his/her child is suffering and he/she can’t take the pain away. This experience me to feel sorry for parents with sick children. One mom told me that she like running into the street and screaming, “My child is sick. Would somebody please help us?” It breaks my that these parents are so anxiously(忧虑地) searching for someone to care and help them the hard times of watching their helpless child suffer. So I decided to do something to help them. Two years ago, I almost lost my eyesight. Luckily, I regained(恢复) some eyesight, but I was no longer able to work. I had a lot of time. At first, I thought that my life was because I couldn’t do any of the things I used to do. I believed that my life had no purpose and I was no to anybody anymore. I began to be interested in surfing the Internet for information. One day I received several emails asking for help for sick children. I decided to post their stories and pictures on a webpage. What began as a has grown into a fulltime job I enjoy doing every day. Since my website was built, I’ve received tens of emails from worried parents asking me to put their child’s story online. And over 325 volunteers have me to send children “happy mail” without being paid.
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