Plastic can _________from heat and electricity, when it's really cold, plastic won’t stick to your hand like a piece of metal does.
A.isolate
B.separate
C.insulate
D.split
A.isolate
B.separate
C.insulate
D.split
A plastic wheel can be as tough as a metal one.
A.useful
B.tight
C.weak
D.strong
It can be inferred that the young plastic surgery patients in Korea______.
A.are all in their teens
B.are knowledgeable about the medical procedures
C.all want their faces modeled after TV stars
D.always get plastic surgery without their parents' consent
Which expressions can be used to describe the material of a device component?
A.rubber
B.metal
C.cord
D.plastic
The plants are in a(n) () plastic box, so the children can observe how the roots grow with time.
A、appropriate
B、intricate
C、transparent
D、waterproof
A、The common advantage of paper and plastic is cheap
B、Using wood as package material can protect the environment
C、Metal can be used to pack drinks
D、Glass can be used to fill drinks
Some environmentalists think that ______.
A.plastic packaging should be made more convenient
B.shops should stop using plastic containers
C.too much plastic is wasted
D.no alternative can be found to plastic packaging
Some environmentalists think that __________. 查看材料
A.plastic packaging should be made more convenient
B.no alternative can be found to plastic packaging
C.too much plastic is wasted
D.shops should stop using plastic containers
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