there are no plant o__ animals on the moon,because it is too h__ in the day and too cold at night on it.
问题描述：
there are no plant o__ animals on the moon,because it is too h__ in the day and too cold at night on it.
答
there are no plant 【nor】 animals on the moon,because it is too 【hot】 in the day and too cold at night on it.
月球上既没有植物也没有动物，因为月球上白天太热，晚上太冷。
希望能帮到您。。。望采纳
答
1很明显否定句并列 用or 2.由题意 hot