题目

在室温条件下，保存下列药品的方法不正确的是（    ） A.氢氧化钠用带玻璃塞的玻璃瓶保存             B.保存液溴要加少量水形成液封 C.硝酸银溶液装在棕色瓶中避光保存             D.钠保存在煤油中 答案：A 解析:液溴水封、AgNO3棕色瓶避光保存、Na保存在煤油中都是正确的，而NaOH用玻璃塞易黏结，故A错。根据短文内容简要回答下面的问题。Have you ever seen an animal without a head ? There is such an animal ! It has no tail or legs. Its body is full of holes. It eats and breathes but never moves. It lives under water. The water brings the ani8mal air. The water brings the animal little plants and animals to feed on. What animal is it ? It is the sponge(海绵).The sponge is a water animal. Some sponges are found where the water is not very deep. Other sponges live on the floor of the sea. Sponges grow in many sizes,shapes, and colors.Men have been diving for this animal since ancient times. People in ancient times used dried sponges for cleaning and painting.Men still dive for sponges, Animal sponges are needed for many things. But most sponges sold in the store are not animals. Men make them.小题1:What’s the name of the animal without a head ?小题2:Where does the animal live ?小题3:Why can this kind of animals live without moving ?小题4:What’s the use of the animals for people in ancient times ?小题5:Are the sponges sold in the store ?