单词拼写(共15小题, 每小题1分，满分15分)
Generally speaking, snow announces the a__________ of winter.
The students can’t enter the lab without the chemistry teacher’s a___________.
What can you do to c____________ to the poor?
The twins are s__________ to each other in appearance, but they have nothing in common in nature.
Charlie Chaplin, a famous actor, often appeared on the stage, s________ his stick in the air.
Unfortunately, he was d_________ in the last election.
The soldiers fought bravely to d________ against the enemies for their homeland.
The news that our team won spread t_________ the whole school.
In my opinion, parents should be s________ with their kids about table manners.
Children have a natural c_________ about the world around them.
When he came to life, he found himself lying on the bed, s_________ by many people.
Learning English as a second language can be a big c__________.
The pigeon r________ peace, which is the most important thing for human being.
Whenever he is late, he always has v_______ reasons for his being late.
Everyone was silent as he a__________ the winner of competition.