癌是指
A．来自上皮组织的恶性肿瘤B．来自间叶组织的恶性肿瘤C．来自胚胎组织的肿瘤D．来自平滑肌的肿瘤E．来自骨组织的肿瘤
参考答案：A
(3)建设社会主义核心价值体系的具体措施有哪些
Can you tell the _____ difference between the words “require” and “ request”? I sometimes get puzzled by their meanings.
A．dramatic
B．regional
C．apparent
D．subtle
