1. -It is not enough for you just to tell me your decision. _____.
-The only reason is that I"m interested in it.
A. I don"t agree
B. I don"t think so
C. Give me your reason
D. Let"s have a discussion
2. The text has been _____ by somebody because it was too difficult for children to understand at first.
A. created B. written C. simplified D. solved
3. Scientists in some countries have done a lot of work to _____ the moon.
A. cover B. search C. explode D. explore
4. They use specially trained dogs to _____ their sheep at night.
A. take care B. get along with
C. watch over D. turn to
5. The _____ of the new technology has greatly increased the production.
A. usage B. application
C. knowledge D. research
6. I know these flowers are not natural, but the _____ ones look more beautiful and can last long.
A. fresh B. new C. true D. artificial