单项选择题

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) .

Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1.20（）

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