With the help of high technology, more and more new substances ______ in the past years.
| A．discovered | B．have discovered |
| C．had been discovered | D．have been discovered |
Relax yourself every day,________ you'll be too tired to get good grades.
| A．and | B．or | C．for | D．but |
--- Would you mind if I named my dog after your son?
---________！My wife and I will both be proud of it.
| A．I hope not | B．Not a little | C．Nonsense | D．Not in the least |
finger
| A．engineer | B．hungry | C．singer | D．length |
recorder
| A．educator | B．forget | C．worst | D．inform |
design
| A．respect | B．sugar | C．position | D．usual |