Robert is said ___________ abroad, but I don’t know what country he studied in .
| A．to have studied | B．to be studying | C．to study | D．to have been studying |
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 |