2. 考研
  3. The small size of the components of computer chips has proved unstoppable. In each new (1)_____, those components are smaller an

The small size of the components of computer chips has proved unstoppable. In each new (1)_____, those components are smaller an

admin2009-04-26  60
问题     The small size of the components of computer chips has proved unstoppable. In each new (1)_____, those components are smaller and more tightly packed than they were in their predecessor. (2)_____ has been so rapid that chip designers are (3)_____ apparently fundamental barriers to further reductions in size and increases in density. In a small size version of the (4)_____ to wireless communication in the macroscopic world, a group of researchers led by Alain Nogaret, think they can make chips (5)_____ components talk to each other wirelessly.
    The researchers (6)_____ to use the standard print techniques employed in chipmaking to coat a semiconductor with tiny magnets. These magnets will (7)_____ local magnetic fields that point in opposite directions at different points (8)_____ the chip’s surface. Electrons have a (9)_____ called spin—that is affected by magnetic fields, and the team hopes to use a/an (10)_____ called inverse electron-spin vibration to make electrons (11)_____ the chip emit microwaves.
    Dr. Nogaret imagine great advances that would stem (12)_____ the success of his work, and these are not (13)_____ to the possibility of packing components yet more tightly. In today’s chips, the failure of a single connection can put the whole circuit out of (14)_____. This should not happen with a wireless system (15)_____ it could be programmed to re-route signals.
    The project will not be (16)_____ sailing. Generating microwaves powerful enough to (17)_____ data reliably will (18)_____ involve stacking several layers of magnets and semiconductors together and encouraging the electrons in them to move in a harmonious union. But if it (19)_____, a whole new wireless world will be (20)_____.

选项 A、while
B、and
C、because
D、therefore
答案C
解析 上下文的理解。上文提到目前的芯片某一条连接出现故障就可能导致整个电路无法运转，而采用无线系统就不会发生这样的问题，下文应给出不会发生这样问题的原因，应该用表示原因的连词，故because"因为"符合题意。therefore"因此，所以"表结果，不符合题意，排除。while"虽然"表转折；and表示并列，均不符合题意，排除。
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