题目内容

In his first year of presidency, President Obama made several moves in an attempt toimprove the US relations with European allies and its neighboring countries in South America.

A. 对
B. 错

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The American foreign policy in the last half a century has been based on the US analysis of the national interests.

A. 对
B. 错

臀大肌略呈（）

A. 三角形
B. 四边形
C. 五边形
D. 长条形

臀大肌的作用（）

A. 后伸并外旋大腿
B. 后伸并内旋大腿
C. 前伸并内旋大腿
D. 前伸并外旋大腿

臀大肌属髂肌后群，分为（）层。

A. 两
B. 三
C. 四
D. 多