过敏性紫癜（）
A.环形红斑
B.肢端硬性肿胀
C.上眼睑紫红色斑
D.下肢对称性出血性皮疹
E.蝶形红斑
参考答案：D
With _______ successful launch of Tiangong-1, which was _______ breakthrough in this
field, China's space dream took a step closer to reality.[ ]
A. the; a
B. a; /
C. a; the
D. the; /,
观察的技巧主要是细心、全面和（）
A.机敏
B.敏锐
C.灵活
D.反馈
E.注视
