阅读理解。 CBS News-Veteran(资深的)broadcast journalist Mike Wallace died at 93 on April 7, 2012. He had been in declining health in recent years but the cause of death has yet to be released. 'It is with enormous sadness that we mark the passing of Mike Wallace,' CBS president and CEO Leslie said in a statement.  'His extraordinary contribution as a broadcaster is immeasurable. His loss will be felt by all of us at CBS. ' Wallace was a correspondent(记者)on the CBS News program' 60 Minutes 'from 1968 where he earned a fame as one of the toughest interviewers in the business. He spent 38 seasons with the program befor e announcing his retirement in 2006. 'He loved being Mike Wallace,'CBS News chairman Jeff Fager said. 'if he showed up for an interview, it made people nervous. 'He knew that he was going to get to the truth. And that 's what motivated him. ' Over the years, Wallace sat down with seven U.S. presidents as well as other world leaders, celebrities(名人),sports stars and controversial figures such as Malcom X and Dr. Jack Kevorkian. Wallace also made his name as a war correspondent in the 1960s, covering Vietnam. He began his journalism career in the 1940s as a radio broadcaster for Chicago Sun. He joined CBS News in 1951 and later returned to the network in 1963 after leaving in 1955. Wallace also appeared on one-on-one interview show' Night Beat ,'which later aired on ABC. During his remarkable career, he won more 20 Emmy Awards and several other honors. News colleagues remembered Wallace fondly for his form and sharp reporting. 'Mike's tough questioning inspired generations of journalists. 'ABC News President Ben Sherwood said in a statement. 1. Which program was Wallace best known for? A. Chicago Sun news. B. ABC news. C. 60 Minutes. D. Night Beat. 2. The underlines word' that 'in paragraph 4 refers to . A. winning Emmy Awards or other honors B. making people he interviewed nervous C. challenging people to reach the truth D. loving showing up for an interview 3. Wallace didn't work for CBS News in the . A. 1970s B. 1960s C. 1950s D. 1940s 4. What can be conclude from the comments on Mike Wallace in the passage? A. His co-workers admires him for his sharp questions. B. He loved to show off the truth got from the interviewees. C. It was pleasant for people he interviewed to answer his questions. D. He is best respected by his remarkable contribution in the war.