八年级假期生活答案

一,1-5ACBCD6-8BCC9AD10ABC
二,填空:每空一分,11,凸透镜,会聚 12,振动,13,音调,快,响度14,传递信息,响度,声音具有能量(),15,红外线,反射,(略),(略)16,声源处减弱,响度.17,乙,12.3 18,动手 理解 19,ABC,DE,BE,CD,
三,,作图与简答(略)
四,24,法线,界面,CD,右边,60度,30度 25,(1)大小,形状完全相同,验证物像的大小相同.(2)A,玻璃不正等(其它合理答案也可以).(3)将跳棋照亮点(其它合理答案也可以).26,(1)将凸透镜正对太阳光,上下移动凸透镜,在地面上(纸面上,或其它物上)得到一个最小最亮的点,测量这点到凸透镜的距离就是焦距.(2),同一水平高度,在光屏上得到像,(3)10,倒立,放大,实,投影仪,(4)a,物距小于f,b,三者不在同一水平高度

(一)1—5 CBCBA 6—10 CBCCB 11—15 DBDDD 16—20 ACBBB
(二)1. played 2. lived 3. was studying 4. was 5. were working 6. went
7. didn't do 8. Did study 9. did do 10. were 11. was playing saw
12. happened 13. was going 14. had 15. fell rode
三,专项综合训练
(一)1. didn't go until 2. spent on 3. whom go to 4. Were you watching TV when someone knocked at the door 5. Was mum washing clothes or cooking dinner yesterday evening
(二)1—5 ACABC 6—10 ABBCA
(三)1. Cread 2. Bpractice 3. ADid 4. Dwatched 5. Dweren't
6. Csit 7. Cwent 8. Ccooked 9. Cleft 10. Dlast night
(四)1. spent 2. heard 3. took 4. saw 5. lived 6. was writing 7. receive
8. saw, was waiting, had 9. shouted waved 10. were doing, was playing
一般将来时
一,专项重难点突破
(一)1—5 DCCDA 6—10 CAACD 11—15 ACDCB 16—20 ADDBC
二,专项综合训练
(一)1. is arriving 2. will be 3. are leaving 4. doesn't rain 5. am coming 6. will be
7. Are, going to play 8. is going to see 9. are going to work 10. will have
(二)1. am going to have 2. is going hiking 3. are going to watch 4. is going to study
5. Are, going to have 6. Is, going to do 7. Are, going to sing 8. are, going to buy
9. are, going to meet 10. are, going to do
(三)1—5 DABAA 6—10 CCCCA
三,专项中考突破1—5 CABCB 6—10 CCCAB
四,综合级力提升
(一)1. where are you going 2. How about you 3. Who are you going with
4. What are you doing then 5. Have a good time
(二)1—5 BDCAD 6—10 BDBCC