A-A+
The boiling water in the kettle decreases beca
问题详情
The boiling water in the kettle decreases because it ______ into vapor. In other words, it is vaporizing or evaporating.
A．is being converted
B．is converted
C．has been converted
D．converts请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：从第二句时态可判断出第一句时态为一般现在进行时态，从句子语意可判断出动词为被动语态，所以[B]和[D]选项是错误的，[C]选项为干扰项。由此可以肯定[A]为正确选项。
