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单选题
As a defense against air-pollution damage, many plants and animals _____ a substance to absorb harmful chemicals.
A
relieve
B
release
C
dismiss
D
discard
参考答案
参考解析
解析：
句意：作为对空气污染造成的伤害的一种抵御，许多动植物释放出一种物质来吸收有害的化学物质。release释放，放出。relieve减轻，减缓。dismiss解雇。discard舍弃，丢弃。
句意：作为对空气污染造成的伤害的一种抵御，许多动植物释放出一种物质来吸收有害的化学物质。release释放，放出。relieve减轻，减缓。dismiss解雇。discard舍弃，丢弃。
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单选题Why do some people get sick after drinking the water from the river?A
Because the river is pollutedB
Because the river makes the earth more beautifulC
Because the river can only offer water to animalsD
Because there are too many animals and plants in the river
考题
单选题Cargo on deck，plants and live animals are usually received，handled，carried，kept and discharged at（）.A
Carrier’s riskB
Owner’s riskC
Merchant's riskD
Charterer’s risk
考题
单选题Some people argue that it would do more harm than good for plants and animals to develop through artificial selection. Which statement best supports this argument?A
Roses no longer smell like roses.B
Purebred dogs are disappearing.C
Humans are harmful agents of plant and animal evolution.D
Many domesticated plants and animals can no longer survive in the wild.
考题
单选题Which of the following is NOT mentioned as the result of artificial selection by humanity?A
Many new kinds of plants and animals are produced.B
Financial gain is increased considerably by producing better plants and animals.C
Humans are able to control plant and animal reproduction for humans’ pleasure.D
It is necessary for humans to maintain the artificial environments.
考题
单选题Many critics believe that video games are harmful to children that contain violent imagery.A
are harmful to children that contain violent imageryB
containing violent imagery are harmful to childrenC
that contain violent imagery that harms childrenD
containing violent imagery that are harmful to childrenE
harmful to children containing violent imagery
考题
单选题Which statement concerning sweat damage in containers is TRUE?（）.A
Sweat damage in containers is unusual due to the small enclosed volume of airB
In general，containerized hygroscopic cargoes are the only ones subject to sweat damageC
Containers should be ventilated，dehumidified，or the contents physically protected against sweat damageD
Sweat damage is not a problem except in insulated and refrigerated containers
考题
单选题Many students agreed to come, but some students against because they said they don’t have time.A
were against because they said they did notB
were against because they say they don’tC
were against it because they said they did notD
were against coming because they said they don’t
考题
单选题A land ethic of course cannot prevent the conversion, management, and use of the resources of soil, waters, plants and animals.A
altercation B
alternation C
alteration D
allocation
考题
单选题A
They are harmful animals.B
They are strange animals.C
They are attractive animals.D
They are friendly animals.
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