为什么这一题的答案不是与and后的时态一致用were being cut

题目

为什么这一题的答案不是与and后的时态一致用were being cut
Rainforests ＿(在砍伐）and burned at such a speed that they will disappear in the near future.(cut) 答案是are being cut

答案

are being cut and are being burned,
这是两个并列谓语,省去相同成分.
热带雨林正在被 以如此的速度 砍伐、烧毁,
他们在不久的将来将会消失.
现在进行时被动语态.