2. 外语
  3. Compared with the traditional ones, the new satellites ______. Why is it the biggest challenge now to find ways to bring the sa

Compared with the traditional ones, the new satellites ______. Why is it the biggest challenge now to find ways to bring the sa

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问题 Compared with the traditional ones, the new satellites ______.
Why is it the biggest challenge now to find ways to bring the satellites back to the earth after a year or two? ______.
选项 A、Because it is too hard.
B、Because there are no such scientists that can do so.
C、Because major highways of space junk could gradually increase as CubeSats become more common.
D、Because kids can’t do that.
答案C
解析 答案在第七段“因为随着立体卫星变得越加普遍，主要轨道上的太空垃圾可能会逐渐增加。”，故C正确。
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