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问题 单项选择题 A1/A2型题

佝偻病引起“O”型腿多发生在（）

A.3～6个月小儿

B.8～9个月小儿

C.10～12个月小儿

D.1岁以上小儿

E.3岁以上小儿

答案

参考答案：D

单项选择题

表示钢管轧机规格的数据是（）。

A．所轧钢管的最小外经

B．所轧钢管的最大外经

C．所轧钢管的最大内经
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单项选择题

Soon, more of the information we receive via the Internet could come (6) in digital wrappers. Wrappers are made up (7) software code that’s targeted to do specific things with the data (8) within them, such as helping to define queries for search engines. They also keep (9) from (10) access to that code.

A．package

B．packaged

C．packages

D．packaging
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