填空题

These crowded cities are____________(传染病传播的温床)

【参考答案】

the perfect environment for the transmission of infections

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填空题

Judging by the past, we can expect that a new species will arise out of man, surpassing his achievements to those of his predecessor

填空题

but the capabilities of computer are increasing at a fantastic rate, while raw human intelligence is changing slowly, if at all