__________ about wild plants that they decided to make a trip to Madagascar for further research.
| A．So curious were the couple | B．So curious the couple were |
| C．How curious the couple were | D．The couple were such curious |
An experienced doctor usually judges a patient’s illness according to the various________.
| A．signs | B．symptoms |
| C．signals | D．marks |
Independent innovation has brought us a________in profits,40% higher than in the traditional way.
| A．boom | B．failure |
| C．decrease | D．suffering |
The ________ of school leavers that go to university is about fifty percent.
| A．degree | B．percentage |
| C．level | D．standard |
The generation________makes it difficult for parents to understand their children’s opinions.
| A．division | B．gap |
| C．separation | D．interval |
The Students’ Union was founded for the________of them.
| A．benefit | B．advantage |
| C．interest | D．value |