未知题型
He ___________ all the "No Smoking" signs and lit up a cigarette.
He ignored all the No Smoking signs and lit up a cigarette.
未知题型 压送式系统在加料处需装有封闭较好的供料器，以防止在加料处发生（）。
单项选择题 下列属于合理的拓词思路的是（）
单项选择题 It is very important to_________facts and opinions in order to have a better understanding of what a reading passage is talking about.
