问题
选择题
Gary Locke , a Chinese-American, once______ as the governor of Washington for 8 years and now is U.S.Commerce Secretary.
A.had worked
B.worked
C.is working
D.has been working
答案
答案:B
考查动词时态。华裔美国人骆家辉当过8年的华盛顿州的州长,如今是美国商务部长。这里有延续性时间状语,但叙述的是与现在没有联系的过去动作,用一般过去时。