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【单选题】
患者，女性，28岁，因全身关节痛，面部蝶形红斑，查血抗体，确诊为SLE，健康教育的重点是避免日光直射，原因是A.
紫外线可致雌激素作用增强
B.
紫外线是本病的重要诱因
C.
紫外线直接破坏细胞
D.
紫外线加重关节滑膜炎
E.
紫外线直接损害骨髓
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皮皮学刷刷变学霸
举一反三
【单选题】What does the author mean by saying 'we are encouraged to hop when we have two perfectly good legs' (Para. 4) ?
A.
We needn't hop because we are healthy.
B.
Only those who have something wrong in their legs can be encouraged to hop.
C.
It's foolish of us to hop when we have two perfectly good legs.
D.
We should use both sides of the brain.