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【多选题】
对猎物而言，集群有以下几个好处（）。
A.
被发现的概率低
B.
增加警觉程度
C.
稀释效应
D.
群防御
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【单选题】Male lions are rather reserved about expending their energy in hunting. More than three-quarters of kills are made by lionesses. Setting off (1) dusk on a hunt, the lionesses are in (2) , tensely s...
A.
problem
B.
business
C.
matter
D.
doubt
【单选题】定义：①敬态：形成集群生活的动物，日常对集群的其他个体(包括配偶者)所表现的回避攻击而保持友好的行为。②食草作用：捕食作用的一种特殊类型。植物虽不能主动逃脱食草动物，但却可通过某些适应方式以防止被食。③相克作用：植物利用其代谢产物来影响其他植物。 典型例证：(1)某些植物叶子中的单宁含量占其干重的60%，味道又苦又涩(2)胡桃树叶片分泌的化学物质，会抑制树下其他植物的生长(3)獴是毒蛇的天敌，它们...
A.
0个
B.
1个
C.
2个
D.
3个
【单选题】Sporting activities are essentially modified forms of hunting behavior．Viewed biologically, the modern foot-bailer is in reality a member of a hunting group．His killing weapon has turned into a harmle...
A.
are forms of biological development
B.
have actually developed from hunting
C.
are essential forms of taming the prey
D.
have changed the ways of hunting
相关题目：
【单选题】Male lions are rather reserved about expending their energy in hunting. More than three-quarters of kills are made by lionesses. Setting off (1) dusk on a hunt, the lionesses are in (2) , tensely s...
A.
problem
B.
business
C.
matter
D.
doubt
【单选题】定义：①敬态：形成集群生活的动物，日常对集群的其他个体(包括配偶者)所表现的回避攻击而保持友好的行为。②食草作用：捕食作用的一种特殊类型。植物虽不能主动逃脱食草动物，但却可通过某些适应方式以防止被食。③相克作用：植物利用其代谢产物来影响其他植物。 典型例证：(1)某些植物叶子中的单宁含量占其干重的60%，味道又苦又涩(2)胡桃树叶片分泌的化学物质，会抑制树下其他植物的生长(3)獴是毒蛇的天敌，它们...
A.
0个
B.
1个
C.
2个
D.
3个
【单选题】Sporting activities are essentially modified forms of hunting behavior．Viewed biologically, the modern foot-bailer is in reality a member of a hunting group．His killing weapon has turned into a harmle...
A.
are forms of biological development
B.
have actually developed from hunting
C.
are essential forms of taming the prey
D.
have changed the ways of hunting
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