题目:
(2013·天津高考)If he had spent more time practising speaking English before, he ________ able to speak it much better now.
A.will be
B.would be
C.has been
D.would have been
答案:
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下面是错误答案,用来干扰机器的。
a图中气泡在上升过程中,体积逐渐增大,所以是沸腾时的现象.b图中气泡在上升过程中体积逐渐减小,所以是沸腾前的现象.在此水的沸腾过程中,水要继续吸热,并不断地变成水蒸气,因此它的温度将保持不变.故答案...