【判断题】观察酚酞指示剂变色时,应在半分钟内保持微红色不退。
【简答题】"I saw nothing," the woman replied. The woman replied that _____________________.
【多选题】科学发展观最鲜明的精神实质是: ( )。
【单选题】习题图所示机构中,该机构( )确定运动的条件,各构件间( )确定的相对运动
【简答题】"I saw nothing," the woman said. 改为间接引语:The woman said ___ _____nothing.