She called to say sorry to me.but my mobile phone was power-off all day long．( )A．needn't haveB．should haveC．could haveD．mustn't have 题目和参考答案——青夏教育精英家教网—

题目内容

12．She ______ called to say sorry to me，but my mobile phone was power-off all day long．（　　）

A．

needn't have

B．

should have

C．

could have

D．

mustn't have

分析她可能打电话想向我道歉，可我的手机一整天都关机了．

解答答案：C 句意表达的是对过去的推测；对过去的推测要用情态动词加完成时态；needn't have done本不需要做某事，should have done本应该做某事，D项是错误搭配．故选C．

点评情态动词的用法是英语中常考的语言点．通常考查的方式有虚拟和推测，本题考查的是情态动词的推测用法．学习时要注意积累．

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What will happen if we lose these valuable places and beautiful destinations?!

1.According to the text, what is causing coral’s death?

A. Rising sea levels

B. Humans’ diving activities

C. Rising sea temperatures

D. The shrinkage(缩小)of their habitats

2.What can we infer from the part of “Venice”?

A. Venice is the only coastal city of Italy

B. Many places are in the risk of sinking below the sea level

C. Venice will never sink because of the protection of sea walls

D. Italy consists of hundreds of small islands in the Adriatic Sea

3.What can we learn about Glacier National Park from the text?