Scientists estimatethatabout 530,000 objects, too small to detect with radar, _______

Scientists estimatethatabout 530,000 objects, too small to detect with radar, ________theEarth too.

分类：学位英语(x0001)
发表：2024年07月31日 06时07分37秒
作者： admin
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Scientists estimatethatabout 530,000 objects, too small to detect with radar, ________theEarth too.
A、 being circled
B、 are circling
C、 are to be circling
D、 are being circled
【正确答案】：B

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