19．. Don't let it drop to the ground. Don't place your book with the book open, face down. You'd better use a book cover to keep your book in the best condition.
If you want to take care of your books, keep your books on a shelf when you are not reading them. But also take care that the books should be placed in an upright (竖立的) position.
A．Put it on the shelf.
B．Protect it from dust.
C．The ink may damage your book forever.
D．When you handle (握) your book, hold it with care.
E．No one knows exactly how to protect their books.
F．So the best way is to avoid eating or drinking while you read.
G．Here are some tips to keep your books in good condition.
I used to live selfishly, I should admit. But one moment changed me. I was on my lunch break and had__21___ the office to get something to eat. On the way, I___22___a Busker (街头艺人), with a hat in front of him. I had some ___23___ in my pocket, but I would not give them to him, thinking to myself he would ____24__ use the money to feed his addiction (上瘾)to drugs or alcohol. He __25____ like that type ...young and ragged. ___26___ what was I going to spend the money on? Only to feed my addiction to Coca-Cola or chocolate! I then ___27___ I had no right to place myself above ___28___ just because he was busking.
I ___29___ and dropped all the coins into his __30____, and he smiled at me, I watched for a while. As ___31___ as it sounds, I expected something more to come from that moment-a feeling of ___32___ or satisfaction, for example. But nothing happened. ___33___, I walked off. "It proved to be a waste of ___34___," I thought.
On my way home at the end of the __35____, I saw the busker again and he was __36____. I watched him pick up the hat and walk __37____ a cafe counter. There he poured the ___38___ money into a tin collecting ___39___ an earthquake fund-raising (募捐) event. He was busking for charity (慈善)!
Now I donate any ___40___ I have to charity tins and enjoy the feeling of giving.
21．A． left B． cleaned C． prepared D． searched
22．A． led B． chose C． saw D． argued
23．A． chocolates B． coins C． tins D． drugs
24．A． only B． almost C． rather D． still
25．A． acted B． looked C． sounded D． smelt
26．A． Though B． For C． Therefore D． But
27．A． observed B． realized C． expected D． guessed
28．A． it B． all C． him D． them
29．A． waited B． followed C． stopped D． arrived
30．A． rag B． hat C． pocket D． counter
31．A． selfish B． ordinary C． outstanding D． special
32．A． happiness B． sadness C． love D． hate
33．A． Disappointedly B． Unfortunately C． Curiously D． Comfortably
34．A． words B． effort C． space D． money
35．A． moment B． event C． break D． day
36．A． walking around B． passing by C． packing up D． picking out
37．A． around B． in C． behind D． to
38．A． direct B． basic C． actual D． total
39．A． by B． with C． on D． for
40．A． work B． change C． energy D． time