第1题: [单项选择]______ so many efforts in such a short period of time. A. Never have any student made B. Never have a student made C. Never has any student made D. Never did a student make 参考答案:C 答案解析:本题考查句子结构。当带有否定意思的副同放在句首时,其后的句子要倒装;时间状语为in a short period of time,用完成时;student为单数,用has。该句意为:从没有一个学生能在
第2题: [单项选择]不属于淋巴器官的结构为() A. 淋巴结 B. 集合淋巴滤泡 C. 腭扁桃体 D. 脾 E. 胸腺 参考答案:B