31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.
| A．for | B．of | C．about | D．To |
Many people have donated that type of blood;however,the blood bank needs___
| A．some |
| B．less |
| C．much |
| D．more |
The professor could tell by the___look in Maria’s eyes that she didn’t understand a single word of his lecture
| A．cold |
| B．blank |
| C．innocent |
| D．fresh |
Nowadays,there is a___increase in children’s creativity,for they are greatly encouraged to develop their talents
| A．sharp |
| B．slight |
| C．natural |
| D．modest |
The new stadium being built for the next Asia Games will be ___the present one
| A．as three times big as |
| B．three times as big as |
| C．as big as three times |
| D．as big three times as |
The manager___the workers how to improve the program since 9 am.
| A．has told |
| B．is telling |
| C．has been telling |
| D．will have told |