Over the past decades, forest area ______ in China as a result of massive defore

Over the past decades, forest area ______ in China as a result of massive defore

题型:不详难度:来源:
Over the past decades, forest area ______ in China as a result of massive deforestation.
A.had decreasedB.decreasedC.is decreasingD.has been decreasing

答案
D
解析
考查时态。Over the past+时间段,用现在完成时态,故选D。
举一反三
Will you help me to look for an important paper I left in my office this morning as soon as you _______?
A.arrivedB.arriveC.will arriveD.would arrive

题型:不详难度:| 查看答案
My brother John wants to work in the factory which _______ still _______.
题型:不详难度:| 查看答案
Up to now, they _________ a good way to solve that problem.
A.didn’t findB.can’t findC.hadn’t foundD.haven’t found

题型:不详难度:| 查看答案
These students will graduate from college next summer, by which time they    
in college for four years.
A.have studiedB.had studied
C.will have studiedD.will be studying

题型:不详难度:| 查看答案
I feel sorry for myself .If I   more efforts to my studies , I wouldn’t be doing a job with such low wages.
A devoted     B had devoted   C should devote   D were to devote
题型:不详难度:| 查看答案
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