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【简答题】
患者男，26岁，主诉发热、全身酸痛，头痛乏力等，伴有阵发性刺激性干咳，红细胞冷凝集素试验阳性，血清肺炎支原体抗体阳性( ) A庆大霉素 B氯霉素 C青霉素 D四环素
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【简答题】完形填空。 'I'm too old and it's too late,' which played over and over in my mind. I was 1 and exhausted after ending my marriage and my law career at the same time. 2 my ambition to become a writer, I 3 m...
【简答题】“I'm too old and it's too late,” these were the words which played over and over in my mind. I was 41 and exhausted after ending my marriage and my law career at the same time. 42 my ambition to becom...
【简答题】完形填空。 'I'm too old and it's too late,' which played over and over in my mind. I was 1 and exhausted after ending my marriage and my law career at the same time. 2 my ambition to become a writer, I 3 m...
【简答题】将下列句子改成祈使句，并将其改为祈使句的否定形式。 1、They come to the front and point to me. 2、You can sit on this seat. 3、He is listening to music. 4、You are a good man. 5、He is cleaning the classroom. 6、She can wash clothes...
【单选题】某高中随机选取5名女学生，其身高和体重数据如下表所示 编号 1 2 3 4 5 身高/cm 160 165 160 175 165 体重/kg 46 48 47 50 49 通过计算得到了体重y关于身高x的回归直线方程，则此直线一定过点（ ）
A.
（165，49）
B.
（160，46）
C.
（175，50）
D.
（165，48）
【单选题】无性系品种的育种特点之一是
A.
A群体遗传组成同质、个体纯合
B.
B 群体遗传组成异质、个体杂合
C.
C群体遗传组成同质、个体杂合
D.
D 群体遗传组成同质、个体杂合
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