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3 次の英文を読んで 問い (1)~(20)に答えなさい。
*Periodical cicadas are ①"
(see) only in America. They live in groups like families. Every
group has a different *life cycle and stays in the same area for life. There are 15 different
groups. Most of them are on a 17-year *cycle. However, three groups have a 13-year cycle.
underground. When these cicadas become *adults, they
appear above ground to *mate. Soon after mating and
Most of their lives are spent deep
go up to the earth's surface and
*laying eggs, they die.
Periodical cicadas are one of the *noisiest *insects on earth. The reason for this is that
*inales *call out to the *females during mating season. Each male tries to call *louder than
others. After mating, one female can lay about 600 eggs in trees. When the eggs fall to the
ground, baby cicadas are born. Soon after that, they go under the surface of the earth
for food. They aig about 60 cm deep and stay underground until the spring of their 17th
year. Then, they are able to mate. That spring, the young cicadas come to the surface and
then shed their skins to become larger. This is called 6 molting. Molting changes them into
adults which are able to fly around, mate, and lay eggs. But soon after mating and laying
eggs, they die. The young cicadas dig into the earth and appear again another 17 years later.
So, the cycle (r ) again.
In 1970, one 17-year cycle group of periodical cicadas came to a university during the
graduation ceremony. A famous musician was giving a speech at that time. Later, he
(write) a song about the cicadas. They were so noisy, but he said they sang *beautifully.
Cicadas in this group appeared again during 1987 and 2004 at that university.
When periodical cicadas are in mating season, millions of them appear above ground.
They appear in large numbers for two reasons. The first reason is that all of them cannot
be eaten by birds and other insects. The second reason is that they can easily find and mate
with other cicadas. 99% of their lives are spent underground. They can live above ground
for only two weeks. They are one of the insects with the longest lives, but scientists don't
understand Acicadas know it is the B to go up to the surface.
(注) periodical cicada 周期ゼミ(一定の周期で大量発生するセミ)
life cycle 生活環 (生物が世代ごとに繰り返す発生成長の過程) for life-
most of ~~のほとんど cycle
surface
underground 地中で adult
appear 姿を現す mate 交する lay ~を産む
noisiest 「noisy (うるさい やかましい)」の最上級 insect
male
call out 呼びかける female
louder 「loud (大声で、大きな音で)」 の比較殺
Shed one's skin 脱皮する beautifully 美しく
dig #6
(1) ①と⑦の ( )内の語を適当な形に変えて, それぞれ1語で書きなさい。
①( ) (
