15．If farmers          trees and forests，giant pandas         no where to live．（　�。�
A．cut down； haveB．will cut down； will have
C．will cut don； haveD．cut down； will have

分析 如果農(nóng)民砍倒樹木和森林，大熊貓將會沒有地方生活了．

解答 答案：D if引導(dǎo)的時(shí)間狀語從句中，常用一般現(xiàn)在時(shí)表示將來，主句可以用一般將來時(shí)．根據(jù)"If farmers          trees and forests"可知在從句中要用一般現(xiàn)在時(shí)表將來，主句還是一般將來時(shí)．故選D．

點(diǎn)評 在if引導(dǎo)的條件狀語從句中經(jīng)常用一般現(xiàn)在時(shí)表將來，然后根據(jù)具體的題意去選擇主句的時(shí)態(tài)．

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