题目

一水池有2个进水口，1 个出水口，进出水速度如图甲、乙所示. 某天0点到6点，该水池的蓄水量如图丙所示.（至少打开一个水口） 给出以下3个论断： ①0点到3点只进水不出水；②3点到4点不进水只出水；③ 4点到6点不进水不出水.则一定能确定正确的论断是  （    ） A．①           B．①②                 C．①③               D．①②③选词填空（每空1分，共5分）根据短文内容，用方框中所给单词的正确形式填空，使短文通顺，完整，每词限用一次。hundred bored many they finish Nowadays, there are many robots working in factories. They can help to build cars, and 【1】__________ doing simple jobs over and over again. Fewer people will do such jobs in the future because they are boring, but robots will never get 【2】____. Some robots in Japan can walk and dance. There will be a lot【3】_____robots in future. Some scientists believe that we can make robots move like a human and also it will be possible to make【4】_____ really think and talk like a human.. However, it may take 【5】_____ of years. The robots in the future will have many different shapes, such as humans, plants, animals and so on. Do you think you will have your own robot in the future?