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【单选题】
有关原发性痛经的病因,正确的是A.
病人雌激素水平异常升高可致痛经
B.
子宫自主神经敏感性增加痛经
C.
子宫内膜前列腺素过度合成可导致痛经
D.
子宫内膜组织缺氧引起痛经
E.
指子宫内膜异位引起的痛经
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举一反三
【单选题】In the following sentences, which "shallow" has different meaning?
A.
These beech trees have shallow roots
B.
I found the film rather shallow.
C.
Place the meat in a shallow dish.
D.
Move to the shallow end of the pool.
【简答题】宽度超过300mm的洞口上部应设置过梁。
【简答题】No one is exactly sure how baseball began, but it seems to have its roots in the English called "rounders" or "four-old-cat." Rounders had many of the same features as baseball has today. Basebal...
【简答题】In the text "Global Melange", the author quotes Walter Anderson as following: "Symbols of all kinds have detached themselves from their original roots and float freely, like dandelion seeds, around t...
【简答题】Since the first Earth Day in 1970, Americans have gotten a lot " greener " toward the environment. “We didn’t know at that time that there even was an environment, let alone that there was a problem w...
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