As part of an ongoing campaign against polyvinyl chloride (聚氯乙烯), a Virginia-based environmental advocacy group today called on manufacturers and retailers to phase out its use in shower curtains. The Center for Health, Environment and Justice (CHEJ), released the results of a small study indicating that PVC (聚氯乙烯)-containing shower curtains are capable of emitting scores of potentially harmful materials, into people’s bathrooms. A previous study, conducted by Environmental Protection Agency researchers, also found that plastic shower curtains can emit toxic compounds into the air.
There’s still debate among scientists about just how serious the health effects are especially at low doses. However, CHEJ urges consumers to avoid using PVC shower curtains, as well as many other PVC products.
For people who are concerned about their shower curtains, there are alternatives. IKEA phased out PVC shower curtains 11 years ago, switching to ethylene vinyl acetat
A. Yes, that information is always on the shower curtain label.
B. Not always, because shower curtains don’t have to be labeled.
C. Yes, but only if they’re made by IKEA after 2008.
D. No, because they only contain low doses of PVＣ.
Passage 5
Research is commonly divided into "applied" and "pure". This classification is arbitrary and loose, but what is usually meant is that applied research is a deliberate investigation of a problem of practical importance, in contradistinction to pure research done to gain knowledge for its own sake. The pure scientist may be said to accept as an act of faith that any scientific knowledge is worth a pursuing for its own sake, and, if pressed, he usually claims that in most instance it is eventually found to be useful. Most of the greatest discoveries, such as the discovery of electricity, X-rays, radium and atomic energy, originated from pure research, which allows the worker to follow unexpected, interesting clues without the intention of achieving results of practical value. In applied research
it is the project which is given support, whereas in pure research it is the man. However, often the distinction between pure and applied
A. The author first refutes the classification of research into the pure and the applied and then analyze the reasons for the intellectual snobbery and tendency to look down on the one of the two.
B. The author first refutes the classification of research into the pure and the applied and then presents his own classification.
C. The author first refutes the classification of research into the pure and the applied and then points out that the classification results from two false ideas.
D. The author first points out the practical importance of applied research and then criticizes those who look down on applied researc
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