已知a、b、c满足a﹣b=8,ab+c2+16=0,则2a+b+c=( )
4
—The food looks nice.
—Yes. But I just _____ it, and it is terrible.[ ]
A. seemed
B. tasted
C. felt
D. sounded
女孩,12岁,半小时前从自行车后座上摔下右肘撑地,后肘上肿痛。医师检查发现下列情况即诊断为肱骨髁上骨折。其主要依据是()
A.肘上明显肿胀
B.肘部有皮下淤血
C.压痛明显
D.肘部反常活动
E.肘关节活动障碍