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【单选题】
已知半径为1的圆心在，半径为3的圆的圆心坐标是（- ，1），则两圆位置关系是 [ ]A.
外切
B.
内切
C.
相交
D.
外离
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】It was ___ weather we had ever had in the past ten years.
A.
worst
B.
the worse
C.
the worst
D.
worse
【单选题】“What place is it?” “Haven’t you found out we _____ back where we ______?”
A.
were, had been
B.
have been, are
C.
are, were
D.
are, had been
【单选题】She told us that her brother ______ the Army for 3 years.
A.
had joined
B.
had been in
C.
joined
D.
has been in
【单选题】It was said that they _____ for twenty-five years.
A.
had got married
B.
had married
C.
married
D.
had been married
【单选题】The earth is about ___as the moon.
A.
as fifty time big
B.
fifty times as big
C.
as big fifty times
D.
fifty as times big
【单选题】We were listening closely to the lecture yesterday evening when suddenly the light _______.
A.
had been gone out
B.
was going out
C.
was gone out
D.
went out
【单选题】下列哪一项不是小儿高热惊厥的临床特点()。
A.
惊厥多发生于4个月至3岁，最后复发年龄不超过6~7岁
B.
先发热后惊厥，多于发热初24h内的体温骤升期
C.
惊厥呈全身性，历时<10min，发作后不留下后遗症< /div>
D.
多伴有呼吸道、消化道感染，而无中枢神经系统感染
E.
发作后脑电图异常
【单选题】The teachers ______ the office for a few minutes when we arrived. We didn't meet them. [ ]
A.
had been away from
B.
had left
C.
have been away from
D.
have left
相关题目：
【单选题】下列哪一项不是小儿高热惊厥的临床特点()。
A.
惊厥多发生于4个月至3岁，最后复发年龄不超过6~7岁
B.
先发热后惊厥，多于发热初24h内的体温骤升期
C.
惊厥呈全身性，历时<10min，发作后不留下后遗症< /div>
D.
多伴有呼吸道、消化道感染，而无中枢神经系统感染
E.
发作后脑电图异常