凡士林
A.油质性基质B.水溶性基质C.栓剂基质D.乳化剂E.气雾剂的抛射剂
参考答案:A
结核菌素试验结果(+++)是指局部()
A.硬结直径<5mm
B.硬结直径5~9mm
C.硬结直径10~19mm
D.硬结直径<20mm
E.硬结直径<20mm伴水疱
______ first used the term "communicative competence" in deliberate contrast to Chomsky's "linguistic competence".
A. Stern B. AsherC. Krashen D. Hymes