题目内容

---Imagination     important in science, and it helps us dream up our future.
---You are definitely right. If only something         allow me to see insects and spiders magnified without getting close to them.
A．was; would B．is; willC．will be; canD．is ;could
D
第一空是陈述客观真理， 所以用一般现在时态；第二空是虚拟语气，与现在事实相反，用过去式，选D
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