In the past decades, sea ice _____in the Arctic as a result of global warming.

题型：黑龙江省期中题难度：来源：

In the past decades, sea ice _____in the Arctic as a result of global warming. [ ]
A. had melted
B. has been melting
C. melted
D. is melting

答案

举一反三

— What"s the matter with Andy ? He doesn"t look very well.
— He has a headache because he ______ too long; he ought to have stopped reading.[     ]
A. had read
B. is reading
C. was reading
D. has been reading

题型：江西省模拟题难度：| 查看答案

I _______ English since I was very young but still can"t communicate fluently in it.   [     ]
A. study
B. have been studying
C. studied
D. am studying

题型：河北省模拟题难度：| 查看答案

— Jack, do you know anything about Doctor Brown?
— I _____ to him for years. I don"t see how anyone else could do better.[     ]
A. went
B. will go
C. had gone
D. have been doing

题型：河北省模拟题难度：| 查看答案

— 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

题型：河北省模拟题难度：| 查看答案

— What have you been busy with these days?
— I ______ that the speech contest has been brought forward, so I ______ for it. [     ]
A. was informed; have been preparing
B. have informed; am preparing
C. informed; have prepared
D. was informed; prepared

题型：河北省模拟题难度：| 查看答案