It’s the first time I __ to see you this year.
A.had come
B.came
C.have come
D.come
答案:C
Few students can understand the sentence until it twice or three times. [ ]
A. explains
B. is explained
C. will be explained
D. has explained
疑有甲亢的病人,2个月前曾作胆囊造影,为确定有无甲亢,下列哪项试验最有价值()
A.甲状腺摄131Ⅰ率
B.血清蛋白结合碘
C.甲状腺激素结合试验
D.T3、T4
E.以上均无价值