物理灭菌法最有效的是()。
A.日光曝晒法
B.紫外线照射法
C.喷雾法
D.煮沸消毒法
E.高压蒸汽灭菌法
参考答案:E
--- Look! I’ve bought ______ new pen.
--- What ______ beautiful pen! It in particular seems nice.
A.the; a
B.不填; a
C.a; a
D.a; the
— What's this in English?
— ______ a pen. [ ]
A. This is
B. That's
C. It's
D. Its