It can be concluded that science education has reached a new phase of development.

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问题 It can be concluded that science education has reached a new phase of development.

选项 A、grade
B、class
C、standard
D、stage

答案D

解析 句意:可以概括地说,科学教育已经发展到了一个新阶段。phase意为“阶段,时期”。grade意为“等级”;class意为“阶级”;standard意为“标准”;stage意为“时期,阶段,程度”。
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