核心词汇
1．I have seen clouds of different s____________ in the sky.
2. At last the sun was s____________ after weeks of rain.
3．With the telescope，they can observe distant stars that are i____________ to the naked eyes.
4．The boy was thirsty for ____________(复仇)after his father’s death.
5．He has __________(积攒)a large sum of money.
6．He stood there still，as if he were _______(卡住)．
