化学实验是进行科学探究时的重要途径．下面让我们一起走进化学实验室．

（1）用量筒取液体体积时，视线要____．

（2）对实验剩余药品要进行处理____ ．

B

    A young man went to a car shop. He was wearing rubber boots(橡胶靴子) and a dirty jacket. He needed a haircut(理发) very much. The young man looked at an expensive car carefully and then asked the shop owner(店主), "How much is this car?" "Nine thousand two hundred and eighteen," the owner answered. "I want sixteen of them," the young man said. The shop owner smiled coldly. He showed the door to the young man.

    In another shop on the other side of the street the business was done(生意做成了). The young man took money out of his pocket and paid for the cars. He said the cars were for himself and his friends were. Each of them wanted to get one. He said that he and his friends were working on a fishing-boat. "We have got much money this season," the young man said, "and we want to buy cars."

划分发达国家与发展中国家的依据是（　　）