All the characteristics that distinguish birds ________ other animals can be traced to prehistoric times..
| A．to | B．between | C．for | D．from |
第二部分
I．单项选择（共15小题，每小题1分，满分15分）
Don’t give up halfway, Andy. You’ll succeed ________ if you keep on working
like this.
| A．in return | B．on time | C．by the time | D．in time |
If we go on using energy so wastefully, __________ are that our oil wells will be dried up before new energy sources can be found to replace oil.
| A．chances | B．opportunities | C．questions | D．problems |
— They are quiet, aren’t they?
— Yes. They are accustomed ______ at meals.
| A．to talk | B．to not talk | C．to talking | D．to not talking |
The number of road accidents and the deaths _______ those accidents______ greatly over the past year.
| A．arose from; increased | B．resulting from; has increased |
| C．arising from; increased | D．resulted from; has increased |
Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _____ introduced the idea in 1953 _____ aspirin could reduce the risk of heart attacks.
| A．them; when | B．which; that | C．what; that | D．which; when |