In manufacturing, cheaper materials are constantly being for the better, more expensive kind.
| A．maintained | B．cancelled | C．substituted | D．deposited |
相关试题
to sunlight for too much time will do harm to one’s skin.
| A．Being exposed | B．After being exposed | C．Exposed | D．Having exposed |
On the contrary,I think it is Tom,you,to blame.
| A．more than; are | B．less than; who are |
| C．rather than; that is | D．rather than;is |
.Danny left word with my secretar
yhe would call again in the afternoon.
| A．that | B．who | C．as | D．which |
Thelook on his face showed that he was greatlyof being left alone in the house.
| A．terrified;terrifying | B．terrified;terrified |
| C．terrifying; terrifying | D．terrifying; terrified |
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