大理石饰面板堆放时，应立放，其倾斜度不应大于______。
A．15°
B．20°
C．25°
D．30°
参考答案：A
Nick is looking for another job because he feels that nothing he does ______ his boss.
A．serves
B．satisfies
C．promises
D．Supports
垓下之战
