题目内容
（请给出正确答案）
A. it is not
B. it were not
C. were it not
D. they were not
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更多“The insects would devour all o…”相关的问题
The best title for the text would be ______.
A．Desert Animals and Insects
B．Kangaroo Rat and Camel
C．The Climate in Desert
D．Desert Plants
听力原文： The Sierra de Aracena in the northwest of Andalucia boasts one of the most beautiful rural landscapes in the region. One of the greenest comers of the sun-baked south, the peaks and valleys here are rich in forests of sweet chestnuts and cork oaks. In spring, wild flowers carpet the meadows, attracting a wealth of bird and insect life.
Despite its outstanding natural beauty, the Sierra de Aracena is barely touched by the tourist trail, and even Andalucians are largely unaware of its hidden treasures.
But take time to explore this region, and you're guaranteed not only space and tranquility, but the warmest of welcomes, particularly in the old-fashioned whitewashed villages, scattered throughout the highlands.
Peaks and valleys in the Sierra de Aracena are rich in ______.
A．forests of chestnuts and cork oaks
B．wild flowers
C．meadows
D．birds and insects
A．calculated
B．estimated
C．measured
D．valued
A．The imported insects would not prove more damaging to the environment in the United States than are the fire ants themselves.
B．The predator insects from Brazil could survive in the ecological environment found in the United States.
C．The especially aggressive fire ants from the two-queen nests would not be able to destroy the Brazilian predator insects.
D．The predator insects would stop the increase of the ant population before the ants spread to states that are farther north.
E．The rate of increase of the fire-ant population would not exceed the rate at which the predator insects could kill the ants.
A、Venomous cabbage is also known as Scorpion Cabbage.
B、Cabbage crops have strong resistance to insects like caterpillars.
C、Farmers don’t need to spray pesticides to kill pests since venomous cabbage becomes its own pesticide.
D、Venomous cabbage decreases the hazardous chemicals that we would eat in conventional food.
Which of the following is true？
A．Male insects are always smaller than females.
B．In a given species nature provides differences between sexes to secure successful production.
C．Size and strength protect females from other females.
D．Longevity is characteristic of the Dynastes and Megasoma.
Why, you may wonder, should spiders be our friends？
Because they protect so many insects, and insects include【M1】______
some of the greatest enemies of the human race. Insects
would make impossible for us to live in the world; they 【M2】______
would ruin all our crops and kill our flocks and herds,
as it were not for the protection we get from insect 【M3】______
-eating animals. We owe a lot for the birds and beasts 【M4】______
who cat insects but all of them put together kill only
a fraction of the amount destroyed by spiders. Moreover, 【M5】______
unlike some of the insect-eaters, spiders never make 【M6】______
the least harm to us or our belongings.
Spiders are not insects, as many people think, and 【M7】______
or even nearly related to them. One can tell the difference
almost at a glance, for a spider always has eight
legs but an insect never more than six.
How many spiders are joined in this work on our 【M8】______
behalf？ One authority on spiders made a census
of file spiders in a grass field in the south of
England, and he estimated that there were more
than 2,250,000 in one acre; that is anything 【M9】______
like 6,000,000 spiders of different kinds on
a football pitch. Spiders are busy least
half the year in killing insects. It has been
estimated that the weight of all the insects
destroyed by spiders in Britain in one year would
be greater than those of all the human beings 【M10】______
in the country.
【M1】
Which of the following statements is NOT TRUE？
A．The legend about bats badly affected their reputation.
B．Vampire bats sucked the blood of women rather than the blood of men.
C．Without bats the number of insects would increase.
D．Bats do no harm to humanity in a genral sense.
Spiders are not insects, as many people think, nor even nearly related to them. One can tell the difference almost at a glance, for a spider always has eight legs and insect never more than six.
How many spiders are engaged in this work in our behalf？ One authority on spiders made a census of the spiders in grass field in the south of England, and he estimated that there were more than 2 250 000 in one acre; that is something like 6 000 000 spiders of different kinds on a football pitch. Spiders are busy for at least half the year in killing insects. It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day. It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
(33)
A．Because they are beneficial insects.
B．Because they destroy insects without hurting us in any way.
C．Because they protect insect-eating animals.
D．Because they include some of the greatest enemies of the human race.
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