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Buying goods in shops saves people the trouble of_________________ if the goods don’t suit you.
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Chinese dumpling is one of the most important foods in Chinese new year. Since the shape of Chinese dumpling is similar to ancient Chinese 1or silver ingots, dumplings symbolize 2. Traditionally, the members of a 3get together to make dumplings during the New Year’s Eve. They may 4a coin in one of the dumplings. The person who finds the coin 5have a good fortune in the New Year. Chinese dumpling is also popular in other Chinese festivals, so it is part of the Chinese culture.[音频]
患者,女,29岁,平素月经规律,周期为28天,持续时间为4天,末次月经是5月7号,今天是5月14号,其子宫内膜变化处于
月经来潮后子宫内膜再生来自
下列哪项是周期性调节的主要环节
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