A. much cheaper
B. much lower
C. more expensive
D .much higher
第1题
_in his study,hedidn'tknow that all the others ha
A Burying
B Buried
C.Buried himself
D. He buried
第2题
Have you seen Mr Green? Yes, I saw him at the school gate. He_ with the headmaster.
A is talking
B.was talking
C. talked
D.has talked
第3题
-john is very If he promise to do something he'll do it.
A.independent
B.reliable
C.confident
D.flexible
第4题
My desk-mate has difficulty_ spelling some of the words in American English while, I have trouble_ intonation
A. with: with
B. in; with
C. in; in
D. with; in
第5题
?
A. He arrived there half an hour late
B. Tom is the most honest boy in his class
C. I really hope to
D. It is a great honor for me to be here
第6题
下列说法正确的是( )。
A. α射线与γ射线都是电磁波
B. β射线为原子的核心外电子电离后形成的电子流
C. 用加温、加压或改变其化学状态的方法都不能改变原子核衰变的半衰期
D. 原子核经过衰变生成新核,则新核的总质量等于原核的质量
第7题
带电粒子进入云室会使云室中的气体电离,从而显示其运动轨迹。图5是在有匀强磁场的云室中观察到的粒子的轨迹,a和b是轨迹上的两点,匀强磁场B垂直纸面向里。该粒子在运动时,其质量和电量不变,而动能逐渐减少。下列说法正确的是( )
A. 粒子先经过a点,再经过b点
B. 粒子先经过b点,再经过a点
C. 粒子不带电
D. 粒子带正电
第10题
的思想,撰写一个教学设计片段,并写出每个教学环节的设计意图。
要求:
1、教学片段要有层次,有条理.
2、设意图要清楚,在每个环节中具体落实了哪些“四基”和“四能”目标
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