【简答题】The air bag is a piece of safety equipment in cars. It was first designed by John W. Hetrick in 1952. Like many inventions, he came up with the idea as a result of an that had occurred in his li...
【简答题】用所给单词的正确形式填空。 Last month, our dog 1.____ (welcome) me when I came home from school. He wanted a walk, but I was too tired. I 2.____ (throw) down my bag and went to the living room. The minute I sat do...
【简答题】In terms of health condition, we must not forget that health (________) is brought about not by doctors but by patients themselves. 2. With the help of the textbook, you'll possibly speak, read and wr...