初二寒假生活指导答案山东教育版
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初二寒假生活指导答案山东教育版
一、选择题：DBBCC、DBBDD。
二、填空题
1、振动，介质，0，音色，响度。
2、光在同种均匀介质中是沿直线传播的。
3、先升华后凝华，液化，凝华。
4、凸，倒立，弱。
5、异种，吸引。
6、同一高度，缩小，照相机。
7、蒸发，熔化，吸。
8、电流表的正、负接线柱接反了。电流表的量程选小了，烧坏。
9、0.22，串联电路中电流处处相等。
三、作图(学生上黑板画)
四、实验题：
2、(1)并联电路中干路电流等于各支路电流之和。
(2)减少实验误差，提高实验的准确度，增加干电池的个数。
(3)用三个电流表同时测量A、B、C三处的电流。
3、(1)凹，靠近。
(2)晶状体太凸，成像在视网膜前。
五、计算题：
解：S=Vt=340m/s×01s÷2=17m。
答：要听到自己的回声，人距障碍物至少17m。 2 / 4
六、综合题
1、MN，AO，3，6，右。
2、A，
3、-2 ℃ ，24 ℃ ，0.38。
4、(1)温度计的玻璃泡碰到了杯底。(2)读数时两眼没有与温度计的液柱上外表相平。
练习一
ere 3.will ’t watch 5.smoking 6.are getting 7.lost 8.keep 9.lying 10.to
watch
’’t camping it rains 3.leave five-year-old on own 4.The ninth the same as
5.make noise to do
六.1.C 2.B 3.A 4.A 5.A 6.C 7.D 8.
练习二
二.1.have less than 2.is helpful to 3.spend better results on 4.as
interesting as
5.Luckily put out 6.took a trip famous
三.1.A How far 2.B Are 3.B not talk 4.B / 5.B so much 6.B doesn’t like
7.B to answer 8.B will be 9.B isn’t 10.D on
六.1.more helpful than 2.Did enjoy themselves 3.keeping secret between
4.the same as
’t on is it
练习三 3 / 4
三.1.as the as mine 2.different from 3.Be careful with hurt 4.Make sure
closed
t their lives 7.should in danger 8.is getting smaller smaller
五.best fit exercise learn alone took beautiful dangerous choose makes
练习四
二.1.in 2.about 3.on 4.from 5.as 6.of 7.of 8.on 9.for 1
三.1.the most popular 2.telling so much funny 3.saved out of ago 4.has
problems
5.much pay for 6.good at telling so happy 7.protect won’t survive 8.live
up to
四.1.finish 2.to speak 3.brushes 4.is 5.is flying 6.is having 7.watching
8.will reach 9.stops 10.to chat
六.exciting famous the-most-popular interesting cleaner more-beautiful
the-nicest more
练习五
三.1.B 2.B 3.B 4.A 5.B 6.B 7.A 8.C 9.D 10.A 11.B 12..B
.Youth Award. 2.He is very helpful. 3.Yes,he is. 4.He quickly jumped into
the water and did his best to save the boy. 5.Zhang Li.
练习六
ht
二.1.less than 2.taught himself 3.as as 4. What about 5.belongs to 6.Are
able to
7.shorter than 8.is favourite 9.on foot 10.by himself
四.smoke away knocked called through could helped arrived out thanked 4 / 4
五.1.stopped 2.did find found 3.got 4.died 5.were was 6.will be 7.felt
8.is waiting 9.go 10.will meet
练习七
