Question

（共5小題；每小題2分，滿分10分）

根據(jù)短文內(nèi)容，從短文后的選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。

Two brightly colored butterflies have just flown by. They seems to be exactly alike, but actually one is a little larger than the other.  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?   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 (黑脈金斑蝶). As a baby insect, the monarch feeds on milkweed, which seems to give the monarch a disagreeable taste and smell.     Birds that eat butterflies soon recognize the monarch and quickly learn to leave it alone.

    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.     （詞數(shù)206）

A. The smaller insect is the viceroy (副王峽蝶), which feeds on the leaves of trees.

B. The larger insect has a wingspread (翼長) 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 dangerous enemies.

E. The insect that imitates this model for protection is called the mimic（保護色）.

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?

Answer 1

【小題1】B

【小題2】F

【小題3】C

【小題4】A

【小題5】E

解析:

略