3月龄活动性佝偻病儿的最常见表现为:()
A.方颅
B.肋串珠
C.乓乓头
D.手、足镯
E.下肢酸痛、无力
参考答案:C
Expo 2010 Shanghai has been an extraordinary celebration of global business and culture, and it has also provided a fantastic model for Expo 2015 Milan ____________managing and organizing events of this scale.
A.in return for
B.in terms of
C.in exchange for
D.in spite of
“数字地球”是指
A.用数字表示地球的大小
B.把整个地球信息数字化后,由计算机网络来管理的技术系统
C.用经纬网的数据来表示地理事物的位置
D.用GPS数据来表示地球上各种地理事物的位置