—It’s a little bit cold today, but you have sweat all over.
—Yes, I _______ around the city for almost three hours.
| A．have hiked | B．was hiking | C．am hiking | D．have been hiking |
that is a good solution depends on how you look at it.
| A．That | B．What | C．Whether | D．It |
From his on his face, I knew he didn’t want me to ask this question.
| A．expression | B．expectation |
| C．explanation | D．impression |
【原创】 Shanghai is going to introduce sky train into the city, with ______transparent carriages meant to provide passengers with______ unobstructed 360-degree view of the city, the Shanghai Morning Post reported on Thursday.
| A． the; an | B．/; an |
| C．an; the | D．/; the |
【原创】 In 1884 the term“Junk”came to mean“old refuse from boats and ships”，and______ it came to mean“trash”in Western culture .
| A．automatically | B．terribly |
| C．gradually | D．eventually |
【原创】 Vehicles, coal-burning, airborne dust and industrial production ______85 to 90 percent of the major airborne pollution sources in most Chinese cities, the newest research shows.
| A．account for | B．call for |
| C．make up for | D．provide for |