摘要： ①This story us deeply.这故事深深地打动了我们的心. ②Does the amount of rain the growth of crops? 降雨量会影响作物的生长吗? ③It is too early to assess the of the new legislation. 现在来评价新法规的效果为时尚早. ④Scientists are convinced the positive of laughter physical and mental health.

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