Beijing was attacked by such a terrible sandstorm ______few citizens had ever experienced before.
| A．and it was | B．as | C．that | D．which |
Many of us would agree that improving the countryside through technology has great potentials ______ food development in China.
| A．in terms of | B．regardless of |
| C．in spite of | D．on account of |
It may not work out that one living in an English-speaking country will acquire the language ________.
| A．effectively | B．fluently |
| C．automatically | D．severely |
An ideal job should be one that _____ what you are good at with what you are interested in.
| A．combines | B．connects |
| C．contacts | D．concentrates |
Several underground stations are under construction at the same time these days, ________ the rush hour traffic even worse.
| A．to make | B．makes | C．making | D．made |
According to Charles Keeling, the amount of carbon dioxide ________ sharply and steadily over the forty years between 1957 and 1997.
| A．increased | B．had increased |
| C．had been increased | D．was increasing |