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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 Two brightly colored butterflies have just flown by. They seems to be exactly alike, but actually one is a little larger than the other. 1 The smaller one has a wingspread of less than three inches and also a black line on its back wings. At first sight, it is hard to tell them apart. Would you guess from this that they are different-sized butterflies of the same species? 2 If you said yes to either question, you would be wrong, for these look-alikes belong to quite different families. The larger insect is the monarch butterfly (黑脉金斑蝶). As a baby insect, the monarch feeds on milkweed, which seems to give the monarch a disagreeable taste and smell. 3 Birds that eat butterflies soon recognize the monarch and quickly learn to leave it alone. 4 Birds would find this insect tasty, but because it looks like the monarch, birds keep away from it. The viceroy’s similarity to the monarch gives it some protection from its enemies and helps it survive. There are other pairs of look-alike butterflies, bees and moths. In each case, one either has a disagreeable taste or smell, or can give a painful sting (叮咬). The larger is called the model. 5 A.The smaller insect is the viceroy (副王峡蝶), which feeds on the leaves of trees. B.The larger insect has a wingspread (翼长) of up to four inches. C.The bright coloring of the monarch acts as a warning sign to its enemy. D.Birds protect their babies from eating such erous enemies. E. The insect that imitates this model for protection is called the mimic(保护色). F. Or that they are different species of butterflies but close relatives belonging to the same family? G. Do you like this kind of special species?

题目标签:护色金斑蝶选项
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举一反三

【多选题】在果蔬加工厂,常用的护色方法有()。

A.
食盐水
B.
亚硫酸盐溶液
C.
酸溶液
D.
用染色液染色
E.
用高锰酸钾漂白

【多选题】以下选项符合待配母猪的有()。

A.
后备母猪
B.
后备母猪首次配种后发生妊娠中断后
C.
哺乳母猪断奶后
D.
妊娠母猪妊娠中断后

【单选题】下列哪项不属于护色助剂所起的作用?

A.
提高发色效果
B.
抑制肉毒梭菌
C.
防止因氧化使肉味变质
D.
防止亚硝胺的形成

【多选题】下列选项中,( )符合《劳动法》对女工特殊保护的规定。

A.
根据妇女生理特点组织劳动就业,实行男女同工同酬
B.
禁止安排女职工从事矿山井下劳动
C.
禁止安排女职工从事国家规定的第四级体力劳动强度的劳动
D.
不得安排女职工从事有毒有害劳动
E.
用人单位应当对女职工定期进行健康检查

【单选题】下列各选项正确的是( ).

A.
若收敛
B.
若都收敛
C.
若正项级数
D.
若级数收敛,且an≥bn(n=1,2,…),则级数也

【单选题】下列选项中不是甲亢的临床表现()

A.
周期性麻痹
B.
周围血管征
C.
月经量过多
D.
肌无力及肌萎缩
E.
大便次数增多