九年級作爲一個初中學習的衝刺階段，那麼練習題就的重要性就比較高了。爲了方便九年級學子的`學習，下面是小編整理的關於九年級年級練習冊下冊英語答案，希望對你的學習有幫助。
Section A
一： 1. invented ntion stable pers 二： 1~5 CBCCC
三： 1. What, used for 2. Who , invented 3. is , cleaned be repaired 5. to see
Section B
一： ce 2. salty uced 4. remain sant
二: thin accident rding to, was discovered 4. by mistake this way ,in the end into
三: 1~5:AADCD 6~10:BDBDC 11~12 :AC
四: for, on, Who , think, are, inwentions, is , most
Self Check and Reading
一: ury k w en rds 6. developing ded ve te
二: ful ntion most popular ty
三: is believed d 3. to learn sent handed in ,cleaned d him was, invented
四: 1~5:BADBA 6~10:CADAB
五: 1~5:ABCAC
grew vegetables in his garden and sold the money he set up a chemical lab.
use he was awarded 1368 separate and distinct patents during his lifetime.
uary 11th,1847 ber 18th ,1931 ica t a lab 12. 1368
13. His first patented invention was an electrical vote recorder in 1868.
14. 1876~1877,invented the phonograph.
15.1900~1910, invented and perfected and steel alkaline storage battery.
Unit10 By the time I got outside ,the bus had already left
Section A
一： lept tive e
二： 1. had left left come cooked n’t rain had 7. finishing learnt
三: 1~5:CBBAB
四: ing, on time late for ,came ,close off ,overslept e down off
Section B
一 : usted ume ng lled y al c ribe ed ied
二： 1~5CABBD 6~10BAACD
三: off married ted ,to watch ed up much ,as up ened to reds oof ,that
四： 1~5:BEDCA
Self Check and Reading
一： ,hadn’t seen ng go learnt/learned be showed /shown
二: ,to much as possible seen he n’t allowed
三: 1~5 CBCCD 6~10 BABDC
四: 1~5 TFFTF 6~10 CDBAC
