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【单选题】
物理学以（）为核心。A.
物理概念
B.
物理定律
C.
物理观念
D.
物理方法
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举一反三
【单选题】第二节 完型填空 阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。 Mrs. Green invited sonic of her friends【16】dinner. She wanted to cook a fish in a new way. She was very pleased with【17】when the dish was ready....
A.
have
B.
had
C.
to have
【单选题】第二节 完型填空 阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。 Most adults once studied at school,had classes and did their homework every day. The same (41) is going on at school now. But it seems that (42)...
A.
thing
B.
school
C.
homework
【单选题】第二节 完型填空 阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。 If you are writing or studying, it makes very much difference where the light comes from. People who use books and pens every day (41) to be esp...
A.
want
B.
have
C.
know
【简答题】ZX13-04-20测量反冲电子的最大动能,是测定单色X射线束波长的一个方法。如果单色X射线束撞击金属靶时,反冲电子的最大动能是 ,问X射线波长为多长? ZX13-04-21 氢原子光谱的巴耳末线系中,有一光谱线的波长为 ,试求: (1)与这一谱线相应的光子能量为多少电子伏特; (2)该谱线是氢原子由能级 跃迁到能级 产生的, 和 各为多少? (3)最高能级为 的大量氢原子,最多可以发射几个谱线系...
【单选题】第二节 完型填空 阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。 Li Lei works in a farm tool factory. He and five of his friends are very interested in singing. So they have (41) a singing group which is calle...
A.
built
B.
taken
C.
formed
【单选题】第二节 完型填空 阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。 A professor told students to go into the city slums (贫民窟) to study the life of 200 boys. He asked them to 【41】 reports (报告) about each boy's lif...
A.
read
B.
study
C.
write
【单选题】第二节 完型填空 阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选择能填入相应空白处的最佳选项。 How can we practice our spoken English? The first and the most important thing is【16】yourself. You should always be full of【17】or you will【18】im...
A.
believe
B.
to believe
C.
believes
【简答题】Die folgenden Nomen sind von Adjektiven abgeleitet. Ergänzen Sie die passenden Nomen. der/die Jugendliche der/die Kranke der/die Behinderte der/die Erwachsene der/die Alte 1)...
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