China has long been a leader in the field of genetic research ________ improving agriculture.
| A．aim to | B．aiming on | C．aimed at | D．aims with |
Eight children were killed and five were wounded the second knife attack that happened in Fujian Province on March 23,2010.
| A．as a result of | B．as for | C．in addition to | D．in favor of |
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 |
Danny left word with my secretar
y he would call again in the afternoon.
| A．that | B．who | C．as | D．which |
The look on his face showed that he was greatly of being left alone in the house.
| A．terrified;terrifying | B．terrified;terrified |
| C．terrifying; terrifying | D．terrifying; terrified |
Having a large family to support, Mr.Johnson had to work in the evening.
| A．four another hours. | B．more four hours. |
| C．other four hours. | D．four extra hours. |