Without a sure supply of water, farming in that area remains at the _______of the weather.
| A．disposal | B．risk | C．cost | D．mercy |
We can see monuments here and there. Those who have made great ________to human beings and society will never be forgotten.
| A．advance | B．effort |
| C．contributions | D．achievements |
Cleverness is not always a ________ of high grades in exams. You’d better learn knowledge carefully and practice more.
| A．result | B．record |
| C．guarantee | D．reaction |
It is known that the weight of an object ________ from place to place on the earth.
| A．exchanges | B．varies |
| C．translates | D．ranges |
Hibernating animals have stored ________ fat in their bodies during the summer and autumn.
| A．a good many | B．supplies of |
| C．a large quantities of | D．a few |
More and more people choose to shop in the supermarket，for they are especially interested in the ________ of goods on offer.
| A．price | B．variety |
| C．value | D．amount |