The job is great in terms of salary. It has its disadvantages, .
| A．though | B．however | C．even | D．therefore |
In time of serious accidents, _______ we know some basic things about first aid,we can save lives.
| A．whether | B．until |
| C．if | D．unless |
The world is changing fast.I strongly believe that one will easily fall behind _______ he keeps on learning.
| A．unless | B．if |
| C．when | D．as |
The traffic is very_______.It’s quicker to walk there.
| A．noisy | B．crowded |
| C．narrow | D．heavy |
He has read two novels _______.
| A．recent | B．late |
| C．lately | D．ago |
—I think he is very wise.
—No, he is _______ than wise.
| A．kinder | B．more kindly |
| C．more kind | D．rather kind |