The police officers in our city work hard ______ the rest of us can live a safe life.
| A．in case | B．as if | C．in order that | D．only if |
45. The twins look much like each other, but they are different _____ nature.
| A．in | B．about | C．on | D．With |
44. _____ the _____ of modern industry, the pollution is becoming more and more serious.
| A．With; developing | B．Under; development |
| C．With; development | D．Under; developing |
43. Our national scenery Zhangjiajie is so charming that it is _____ description.
| A．out | B．beside | C．over | D．Beyond |
42. In China children, even in their twenties depended _____ their parents _____ food and clothing.
| A．upon; on | B．on; in | C．on; for | D．at; to |
41. During her study in Massachusetts Institute of Technology she has got the degree _____ PhD, and it is a degree ______ chemistry.
| A．of; at | B．in; at | C．of; in | D．in; of |