八年级学生小磊,在最近的几次科学知识检测中,成绩都不理想,他觉得自己升学无望,他

题型:选择题

问题:

八年级学生小磊,在最近的几次科学知识检测中,成绩都不理想,他觉得自己升学无望,他决定弃学找工作。从法律角度来看,他

A.没有认识到学习的重要性

B.没有正确对待学习中的困难和挫折

C.缺乏自信和远大的理想

D.没有认识到受教育是适龄公民的权利和义务

考点:受教育的权利和义务
题型:选择题

中医治疗疾病主要着眼于

A.症状

B.主诉

C.证候

D.疾病

E.体征

题型:选择题

In America,Virginia Beach has all the elements of a classic seaside resort:brilliant beaches,a lively boardwalk,plenty of restaurants and nightspots,and amusement rides sure to appeal to kids.Many believe Virginia Beach is at its best in the off-season,when the town is less crowded but the weather is still mild.

Meanwhile,some safety tips should be followed,enjoying the happiness and excitement the beach offers.

The number l safety tip concerns ocean safety:pay attention to Flag conditions posted on the lifeguard stands.Lifeguards post a red flag to warn when the ocean water is dangerous.Take them seriously! Tourists from land-locked regions are particularly easily attracted by the magic of the waves.However,a calm ocean can become risky without warning.Make sure you swim near a lifeguard.Swimming without lifeguard protection is almost five times as great as drowning at a beach with lifeguards.

Never swim alone.Many drownings involve single swimmers.When you swim with someone else,if one of you has a problem,the other may be able to get help,including signaling for assistance from others.

Don't fight the current.The facts show that some 80% of rescues by lifeguards at ocean beaches are caused by currents.These currents are formed by surf and gravity,because once surf pushes water up the slope of a beach,gravity pulls it back.This can create concentrated rivers of water moving offshore.If you are caught in a rip current,don't fight it by trying to swim directly to shore.Instead,swim parallel to shore until you feel the current relax,then swim to shore.Most rip currents are narrow and a short swim parallel to shore will help bring you to safety.

小题1:When coming to Virginia Beach,children can enjoy the happiness of the following except       .

A.walking on the road made of wood

B.joining the nightspots

C.having interesting rides

D.skiing in the sea小题2:Many people believe the best time to visit Virginia Beach may be     .

A.after autumn school term beginning

B.in the slimmer vacation

C.during the Christmas holiday

D.in the cold winter小题3:Swimming in the sea you'd better not swim     .

A.with a friend

B.within the sight of the lifeguard

C.with the current

D.as far as you like小题4:From the passage,we can know     .

A.one in five persons swimming in the sea is drowned

B.if one with lifeguard were drowning,five persons without lifeguard would be

C.some 80%people drowning by the currents are rescued by lifeguards

D.some 20%drowning by the currents are rescued by life guards小题5:The passage mainly tells us      .

A.some safety tips when swimming in the sea

B.the happiness and excitement the beach offers

C.Virginia Beach has all the elements of a classic seaside resort

D.the dangers for tourists from land-locked regions to swim in the sea

题型:选择题

某原子K层失去一个电子后,其K层出现一个电子空位,当外边L层上有电子跃迁到K层填补空拉时会释放一定的能量;一种情况是辐射频率为v0的X射线;另一种情况是跃迁释放的能量被其他层的电子吸收,使电子发生电离成为自由电子。若跃迁释放的能量被M层的一个电子吸收,电离后的自由电子的动能是E0,已知普朗克常量为h,则电子处于L层时与处于K层时原子的能级差为         ,电子处于M层时原子的能级(即能量值)为    

题型:选择题

服装厂要赶制一批畅销服装,第一车间单独做要22天完成。第一车间做了5天后,第二车间也开始与第一车间一起做,又用了6天全部完成任务。如果这批衣服完全交给第二车间加工,需要几天完成( )

A.11
B.12
C.13
D.14

题型:选择题

如果被教唆的人没有犯被教唆的罪,则( )。

A.教唆者不构成犯罪

B.教唆者仍构成犯罪,并按照其在共同犯罪中所起的作用处罚

C.教唆者仍构成犯罪,但可以从轻或者减轻处罚

D.教唆者仍构成犯罪,但可以减轻或者免除处罚

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