根据百分数的意义可知，百分数不能表示某一具体数量，所以，14米不可以改写成25%米；
故答案为：√．
介词填空。
l. That was an important date ________ which we set up our own business.
2. This was a difficult period ________ which we went through many sufferings.
3. He returned to the village ________ which he spent his happy childhood.
4. Do you know the reason ________ which he is absent?
5. Is this the car _______ which you paid a high price?
皮肤防护器材主要有防毒手套和防毒衣。对（）还可用防毒斗篷和防毒靴套。
A.皮肤的防护
B.眼睛的防护
C.耳朵的防护
D.鼻子的防护
