双语科学站：蝴蝶的惊异
Butterflies go through four stages of life.
蝴蝶的生命历程分为四阶段。
In each stage they look different and each has a purpo. The length of time from egg to adult can range from a few weeks to a few years. The length depends on the type of butterfly.
雌性蝴蝶产卵，卵孵化为毛毛虫。毛毛虫不停地进食并且用它巨大的下颚嚼碎食物。毛毛虫在成长的过程中要褪去好几次皮。在这之后，毛毛虫会粘附在一根树枝上并且吐丝结茧，在24小时之内，毛毛虫最终一次蜕皮。
A pupa or chrysalis forms.
蝶蛹的形成。
Inside the butterfly chrysalis the adult parts of a butterfly are being formed. The chrysalis is usually green to blend in with plant life. The pupa or chrysalis ca cracks open and an adult butterfly comes out. The butterfly dumps waste from its body and pumps blood into its wings. After about an hour it can fly.
蝶蛹之类正在形成蝴蝶的成虫。蝶蛹通常是绿色的，公开在植物中。蝶蛹破了之后，蝴蝶就会飞出来。蝴蝶去除掉它身上的残留物，将血液输送到翅膀中，或许一个小时候就能飞起来。
Butterflies have three main body parts.
蝴蝶由三个主要器官构成。
The head contains the eyes, proboscis and the antennae. Their eyes dont e as we do, even though they can e in all directions. They can only e colors and motion. A proboscis is like a long tongue. Butterflies can u it to drink nectar from a flower. They can also u it to suck sap from leaves and stems. Butterflies u their antennae to smell.
它的头部含有眼睛、鼻子和触角。它们的眼睛不能像人的眼睛这样观看万物，但是他们能通过眼睛观看各个方向。他们只能观看颜色和动作。它们的鼻子像个长长的舌头，蝴蝶通过这个鼻子吸食花朵的花蜜。它们也可以通过鼻子来吸取树的叶子和茎中的汁液。蝴蝶通过它的触角来感知气味。
The middle ction of the butterfly is the thorax. Three pairs of jointed legs and two pairs of wings are attached to this part of the body.
A butterflys scales can be en best on its wings. A brown powder will rub off the wing if touched. Th
e will be scales. The colors and patterns on a butterflys wings protect them from predators. Camouflage is the most common pattern.
蝴蝶中心的那一局部称为胸腔。多节的脚和两对翅膀连接在胸腔上。蝴蝶的鳞片在它的翅膀上最为明显。假设摸到蝴蝶上有一层棕色的粉末，那么那一局部就是蝴蝶的鳞片。蝴蝶翅膀的颜色和图案关怀它们躲避捕食者。迷彩是最常见的纹路。
The third ction of a butterflys body is the abdomen. It is soft and contains ten ctions. It also holds a simple heart, reproductive organs, breathing spores and the digestive and excretory systems.
蝴蝶身体的第三局部是腹部。蝴蝶的腹部很松软并且有10节。腹部内含有
简洁的心脏、生殖器、呼吸孢子、消化和排泄系统。
Males and females often look alike. Male butterflies arch for mates with the correct color and pattern on their wings when they are ready to mate. After mating, a female flies off to look for a suitable plant for her eggs. The color and shape of the leaves help her make her decision. Some butterflies lay clusters of eggs and some just one.
雌性蝴蝶和雄性蝴蝶外表相像。雄性蝴蝶通过翅膀上正确的颜色和花纹来查找配偶。在交配之后，雌性蝴蝶查找一颗适宜的植物来产卵。雌性蝴蝶选择植物取决于叶子的颜色和样子。一些蝴蝶产很多卵，但也有蝴蝶仅产一个卵。
In summary, butterflies are incts and belong to the order Lepidoptera. This word means scaly wings. They are covered by thousand s of tiny scales. Butterflies live in all climates and temperatures. However, the most colorful live in hot tropical climates. Many flower producing plants are available for food in tho regions.
本课小结：蝴蝶属于昆虫纲鳞翅目。"鳞翅'指的是鳞状的翅膀。它们的翅膀由成千上万的鳞片组成。蝴蝶生活在不同的气候和温度下。然而，颜色斑驳的蝴蝶通常生活在热带气候下。在热带区域，有很多花卉供蝴蝶取食。
1) Lepidoptera means which of the following?
A: Leopard-colored B: Scaly wings
C: Droopy wings D: Striped
2) Which of the following is one way butterflies help the environment? A: They eat ants. B: Th
ey are food for other small animals. C: They drive spiders away. D: They spread poison on weeds.
3) Which of the following is the main job of a butterfly caterpillar? A: To become green B: To crawl into its burrow
C: To eat and grow fat D: To frighten predators away
4) How are a butterflys eyes different from a humans?
A: They have no color. B: They can only e down.
C: They are purple. D: They can only e motion and colors.
5) Which of the following part of the body is where the wings are attached?
A: Thorax B: Abdomen
C: Proboscis D: Tail
6) Which of the following helps a female butterfly decide where to deposit her eggs?
A: The shape and color of the leaves B: How clo the spot is to the ground
C: How hidden a spot it is D: All of the above 答案：BBCDAA
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