What is the benenefial point 0f some microbes consuming plant—produced methane?
A. Methane beeomes less poisonous.
B. methane is turned into a fertilizer.
C. Less methane reaehes the atmosphere.
D. Air beeomes cleaner.
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“十一五”时期,我国保持经济平稳较快发展和社会和谐进步的有利条件主要有()。
Just as there was a Stone Age, an Iron Age and so on, we have been living for centuries in a
Paper Age, during which almost all information was kept and sent on paper; and so much of it is wasted after it has been used once that enormous numbers of trees have to be cut down every year to provide us with paper. But now, with the computer, enormous amounts of information can be stored and sent without any paper at all, using small discs or the Internet.
Computers have also made it possible to do very difficult calculations very much faster than any earlier machine could. Computers also allow one to send information to others anywhere in the world via the Internet and in turn to receive information back from them. One can send a very long message more quickly from England to Australia, for example, than from one's house to someone in the garden. Computers are not only used for writing; they can produce diagrams and pictures, and they can be used for playing games. One now sees them at airports and railway stations, in hotels and restaurants; in fact, almost everywhere where people gather.
The author seems to say that the invention of the computer is ______.
A. not so important as that of the steam and petrol engines
B. at least as important as that of the steam and petrol engines
C. less important than that of the steam and petrol engines
D. far more important than that of the steam and petrol engines
其他工程费是指直接工程费以外施工过程中发生的费用,下列()不属该项费用。
The author deems private ownership to be
A. a necessary invention of mankind.
B. an inherent right of a human being.
C. a permanent arrangement for society.
D. an explicit idea of some individuals.