【简答题】短文填词 Fishing is my favourite sport. I often fish for hours without 1.c______ anything. 2. _______ this does not worry me. Some fishermen are unlucky. 3_______ of catching fish, they catch old boots a...
【简答题】阅读短文,选择正确答案。 Is human blood all the same? 'Yes.' You may say. 'It's all red.' Well, it's not as as you might think. Blood is made up of different parts, such as red blood cells (红血球), white blo...