The purse found in the supermarket matches the______ by Tom, so it must be his.
| A．impression | B．imagination | C．which | D．what |
As is well known to us all, in China pigeons stand for peace. However, in India the wheel in its national flag is also a _______of peace.
| A．symbol | B．sign | C．mark | D．example |
It doesn’t make a(an)_______to me whether you go or stay.
| A．difference | B．point | C．deal | D．effort |
How did it______ that humans speak so many different languages?
| A．come out | B．come off | C．come about | D．come round |
Eric was well prepared for the computer test so that he could be positive about passing it on his first________.
| A．intention | B．attempt | C．purpose | D．desire |
The dead rate is _____ pigs and recovery usually ______ within 7-10 days.
A low in; occurs B. rich in;happens
C. high in; came about D. poor in;took place