鉴别诊断马来丝虫与班氏丝虫感染的主要依据是()
A.临床症状
B.厚血片法查微丝虫蚴
C.淋巴结活检成虫
D.免疫学诊断
E.活组织检查
参考答案:B
I went there in 1984, and that was the merely occasion when I ________ the journey in exactly two days.
A.must take
B.must have made
C.was able to make
D.could take
电缆线路架空时应从电力线()通过。
A、上方
B、下方
C、左方
D、右方