The teacher wants his students to know more about modern science and tries hard to develop a（n） ___ about nature among his students．
| A．curiosity | B．habit | C．ability | D．independence |
An artist who was recently traveling on a ferry to the southern island discovered ______ a long lost antique Greek vase.
| A．at random | B．by chance | C．in turn | D．on occasion |
Mrs. Smith finds it hard to clear up the mess, as her children are always ____ whenever she tries to.
| A．in the way | B．on watch | C．in sight | D．on the line |
（2013·北京卷) I have an appointment Dr. Smith, but I need to change it.
| A．to | B．off | C．with | D．from |
（2013·大纲卷）A serious study of physics is impossible some knowledge of mathematics.
| A．against | B．Before | C．Beyond | D．Without |
It will be a big help if you go to the store and get what we need for dinner._____, I’ll set the table.
| A．As a result | B．On the whole | C．In the meanwhile | D．As a matter of fact |