题目

. _______wants to study English well must learn things____________. A No matter who; with heart   B  who; from his heart C whoever ; by heart          D  whomever; by his heart 答案：C（2008?张家界）正确的化学实验操作对实验结果、人身安全都非常重要．下图所示实验操作正确的是（ ）A．闻气体气味B．移走蒸发皿C．倾倒液体D．稀释浓硫酸