It was once called the Sea of Bamboo, but now only one fifth of the area ______ covered with bamboo, and sixty percent of other plants ______ taken the place of the bamboo.
| A．are; have | B．is; has | C．is; have | D．are; has |
Freezing winter is harmful ________ orange trees.
| A．for |
| B．to |
| C．of |
| D．at |
The villagers were often in _______ clashes with each other in those years before the agreement was reached.
| A．interesting |
| B．peaceful |
| C．violent |
| D．spiritual |
He exists ________ bread and water.
| A．on |
| B．in |
| C．by |
| D．with |
The boiler from excessive pressure of steam ________.
| A．exploded |
| B．burst |
| C．explode |
| D．erupt |
It was reported that a plane crash happened last night and most of the passengers were badly _______ and 10 died.
| A．damaged |
| B．injured |
| C．destroyed |
| D．harmed |