— That's the third time he's won the award in this field. — Yes. He ________ his maximum potential in the past decade.
A.explored
B.is exploring
C.has been exploring
D.has explored
试卷相关题目
- 1The secretary________letters all the afternoon and there are still two letters to finish.
A.is typing
B.had type
C.has been typed
D.has been typing
开始考试点击查看答案 - 2Over the past decades, sea ice _______ in the Arctic as a result of global warming.
A.had decreased
B.decreased
C.has been decreasing
D.is decreasing
开始考试点击查看答案 - 3Prices ________ all the time and no one knows when they ________ stable.
A.are going up; become
B.have been going up; will become
C.have gone up; will become
D.have been gone up; become
开始考试点击查看答案 - 4The little boy________in the mud all morning.No wonder he is dirty from head to foot.
A.has played
B.is playing
C.has been playing
D.was playing
开始考试点击查看答案 - 5Unrest and violence in North Africa and the Middle East ____ at their fastest rate since 2008. [ ]
A.have been raising
B.have been rising
C.have raised
D.have risen
开始考试点击查看答案 - 6The little boy ________ in the mud all morning. No wonder he is dirty from head to foot.
A.has played
B.is playing
C.has been playing
D.was playing
开始考试点击查看答案 - 7I_____ violin lessons every two weeks, but I think I'll make it every week from next month.
A.am having
B.have had
C.have
D.have been having
开始考试点击查看答案 - 8Excuse me, Marcia, a reporter from Vanity Fair all day. Could you speak to her now?
A.phones
B.has phoned
C.has been phoning
D.phoned
开始考试点击查看答案 - 9— Hi, Jack!When did you arrive in Berlin?— Last weekend. I ______ a different culture since then.
A.was experiencing
B.will be experiencing
C.have been experiencing
D.had been experiencing
开始考试点击查看答案 - 10I ________ glasses since I was in primary school and I hate them. They make me look like a bookworm.[ ]
A.have worn
B.have been wearing
C.have been worn
D.was wearing
开始考试点击查看答案