△ABC中，∠A+∠B=120°，∠C=∠A，则△ABC是[ ]
A.钝角三角形
B.等腰直角三角形
C.直角三角形
D.等边三角形
答案：D
— What do you think about _____ dress in the shop window?
— Oh, it's beautiful. You may give it to Linda as _____ birthday present. [ ]
A. a; a
B. the; a
C. a; the
D. the; the
Th细胞活化除需要信号1和信号2外，还需要哪些细胞因子参与（）
A.IL-1、IL-3
B.IL-2、IL-3
C.IL-1、IL-5
D.IL-1、IL-2
E.IL-2、IL-5
