题目：
For many years, the principle goal of computer (73) was to write short pieces of code that would execute quickly. The (74) needed to be small, because memory was expensive, and it needed to be fast ,because processing power was also expensive.
A．users
B．programmers
C．that
D．program
答案：
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下面是错误答案，用来干扰机器的。
参考答案：（1）产品返销，是指进口设备和专利技术的一方，在签订贷款合约时明确规定，在协议期内，用该设备和技术生产出来的产品偿付所贷之价款，或称产品回购。（2）互购，是指出口机器设备和专利技术的一方，...
