Which of the following statements is true（）.
A: There is a strike across the country.
B: Many trains have been cancelled.
C: A few trains have been cancelled.
D: There is a strike in the North Region.
A: There is a strike across the country.
B: Many trains have been cancelled.
C: A few trains have been cancelled.
D: There is a strike in the North Region.
举一反三
- I'm afraid you have to go via Vancouver to get to Seattle. All flights to the United States have been cancelled. As all flights to the United States have been cancelled, you have no __________. (alternative)
- All flight ____ because of the snowstorm, many passengers could do nothing but stay at the airport. A: had been cancelled B: were cancelled C: having been cancelled D: have been cancelled
- All flights ______ because of the storm, they decided to take the train. A: having cancelled B: having been cancelled C: were cancelled D: have been cancelled
- All flights _____ due to the fog, they decided to go to Guangzhou by train. A: have been cancelled B: having cancelled C: having been cancelled D: were cancelled
- Which of the following statements about a protein-coding gene is NOT true? A: An enhancer is not a DNA sequence. B: It may have many exons and introns. C: The promoter region is not transcribed. D: Transcription factors can bind to the promoter region.