皮皮学，免费搜题
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【单选题】
海鸥是最常见的海鸟，被称为海上航行安全的“预报员”。下列对海鸥获得“预报员”称号的解释中不符合事实的是：______A.
如果海鸥贴近海面飞行，那么未来的天气将是晴好的
B.
海鸥常落在浅滩、岩石或暗礁周围，航海者可根据此判断附近是否有暗礁
C.
海鸥有沿港口出入飞行的习性，迷失方向时可观察海鸥的飞行方向寻找港口
D.
如果海鸥离开水面高高飞翔，成群结队的从海边飞向大海远处，则预示着暴风雨即将来临
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皮皮学刷刷变学霸
举一反三
【单选题】The author suggests that sex education classes
A.
are a major cause of casual, unprotected sex.
B.
should include the role of sex in a meaningful relationship.
C.
should not include the mechanics of fertilization and birth control.
D.
have taken over a role that rightfully belongs to parents.
【简答题】A． education that shouldn't be overlooked. B．Advantages of proper education. C．Different attitudes towards education. D．Cultural tradition and social customs about in China.
【简答题】刚性双原子分子的理想气体在等压下膨胀所作的功为 10J ,则传递给气体的热量为 _____ J 。
【单选题】All workers, regardless of their sex and education, are required to _____ at the age of
A.
resign
B.
retire
C.
regain
D.
retain
【简答题】DNA所处介质的离子强度越低 ,熔解温度越 ________ 。
【单选题】The concept of universal elementary education, regardless of sex, had been born, but it was still in the ________ of the single-sex school.
A.
realm
B.
terrain
C.
plateau
D.
latitude
【单选题】Sex education is a sensitive area for some parents, and thus it should remain _________.
A.
random
B.
previous
C.
optional
D.
vital
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