Which of the following is NOT a free morpheme
A. bed
B. tree
C. dance
D. children
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平行承包模式与总分包模式的共同点是都有利于( )。
A. 业主选择承包商
B. 缩短建设工期
C. 合同管理
D. 控制工程造价
如果某因素在其评价指标临界值设定的情况下，可能出现的变动幅度( )，则表明该因素是方案的敏感因素。
A. 低于最大允许变动幅度
B. 等于最大变动幅度
C. 超过最大允许变动幅度
D. 在最大允许变动幅度和最小允许变动幅度之间
As for the bullfighting journey held by Fran, which of the following statements is NOT true
A. Fran was facing an important period in his career as a matador.
B. Fran was performing wonderfully in the journey.
C. Still someone predicted that this is the dead end of his bullfighting.
D. The novel faithfully recorded his journey.
The main role of some dinosaurs' developed primitive feathers is to_____.
A. fly
B. fight
C. keep warm
D. frighten the enemy
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