某县人大代表换届选举中,选民明确提出,不了解的候选人不选,不办实事的候选人不选,不替老百姓说话的候选人不选。这“三不选”原则表明
There is no doubt the earth is becoming warmer.
Using a telescope we could see that something .
all day, I went to bed early.
There is a natural phenomenon scientists call the greenhouse effect.
Every time I returned after an , I felt stupid because I was behind the others.