【单选题】Mike _______ in touch with his former schoolmates, who had been living there for ages as soon as he arrived in America.
【单选题】He had been _______ good terms with Tom, but all of ____ sudden they lost in touch with each other.
【单选题】He ______ chess well. But since he graduated from university, he almost has had no time to touch it.
【判断题】急性肾炎患儿经治疗后,最后消失的是镜下血尿。
【判断题】洲际弹道导弹从地下发射井中点火发射的发射方式为“冷发射”。