| Questions 57 to 61 are based on
the following passage. The current emergency in Mexico City that has taken over our lives is nothing. I could ever have imagined for me or my children. We are living in an environmental crisis, an air-pollution emergency of severity. What it really means is that just to breathe here is to play a dangerous game with your health. As parents, what terrorizes us most are reports that children are at higher risk because they breathe more times per minute. What more can we do to protect them and ourselves Our pediatrician’s(儿科医师的) medical recommendation was simple：abandon the city permanently. We are foreigners and we are among the small minority that can afford to leave. We are here because of my husband’s work. We are fascinated by Mexico—its history and rich culture. We know that for A. sell B. transport C. place D. deliver [单选题]在武术套路运动中可配乐的项目是（ ）。
A.单人项目 B.对练项目 C.集体项目 D.没有 [单选题]依据《给水排水管道工程施工及验收规范》GB50268-2008第8.4.2条有关要求，开挖雨水口槽及雨水管支管槽，每侧宜留出（）的施工宽度。
A.200～300mm B.300～500mm C.400～600mm D.400～600mm [多选题]大部分直流负载通过两条直流110V列车线供电，主要用于( ）。
A.常规负载 B.延迟负载 C.永久负载 D.交流负载 [单选题]客户抄表例日可根据各单位实际情况自行安排。
A.对 B.错 [判断题]无缝线路地段，对桥上钢轨焊缝应加强检查，发现伤损应及时处理。（ ）
A.正确 B.错误 [单选题]最高运行速度为120km/h的旅客列车紧急制动距离限值为（）。
A.500m B.800m C.1100m D.1400m。 [单选题]婴儿翻身动作训练的游戏有( )。
A.悬吊被单内侧翻 B.四点定位 C.追车爬 D.爬楼梯 [单项选择]东西关系矛盾问题是指______
A. 发展中国家同发达国家间的矛盾 B. 美苏争霸世界的矛盾 C. 发达国家间的矛盾 D. 发展中国家的内部矛盾 我来回答: 提交
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