The retired professor, _____ in his new book in the past three years, hasn’t realized the decline in his health.
A.involved | B.being involved |
C.having involved | D.to be involved |
All the scientific evidence ______ that increasing use of carbon dioxide ______ the rise of the earth’s temperature.
A.show; result in | B.shows; result from |
C.shows; results in | D.shows; results from |
Without the ‘ greenhouse effect’, the earth ____ be about thirty-three degrees Celsius cooler than it is.
A.should | B.would | C.will | D.must |
During the Middle Ages, a conventional artist was not interested in showing nature and people _____they really were.
A. who B what C. like D. as
________volcanoes now for many years, I am still as enthusiastic about my job as the first day I first______.
A.Studied, started | B.Have studied, started |
C.Having studied, started | D.Having studied, starting |
Film has a much shorter history, especially when ______ such art form as music and painting.
A.having compared to | B.comparing to | C.compare to | D.compared to |