Once upon a time, a （n）__________ famous scientist said that life was not easy for any of us but first of all we should believe in ourselves.
| A．another |
| B．sure |
| C．some |
| D．certain |
This restaurant has become popular for its wide ___ of foods that suits all tastes and pockets.
| A．division |
| B．area |
| C．range |
| D．circle |
Teachers have to constantly update their knowledge in order to maintain their professional ___.
| A．consequence |
| B．independence |
| C．competence |
| D．intelligence |
Though told to stop, the excited speaker ___ talking.
| A．tried on |
| B．kept up |
| C．kept on |
| D．went up |
He thought he heard someone following him, and ___ round. He caught sight of a dark figure in the shadow.
| A．glanced |
| B．glared |
| C．stared |
| D．observed |
What does it matter whether you are rich or poor, ___ you are happy.
| A．as long as |
| B．unless |
| C．even if |
| D．though |