Unit 3 Happy Halloween 學(xué)案
*16. we will go out to play if it ________ tomorrow.
a. don’t snow b. won’t snow c. didn’t snow d. doesn’t snow
**17. she said she had some trouble ___________ her homework.
a. finish b. finishing c. to finish d. finished
*18. —can i get you a drink?
—that’s very nice of you. i’ve already got _____.
a. it b. one c. that d. this
*19. to my ________, he won the first prize in the english competition.
a. surprise b. surprises c. surprised d. surprising
**20. his life ________ a lot in the last few years.
a. have changed b. did changed c. has changed d. does changed
ⅱ. 完形填空：
most musicians agree that the best violins(小提琴) were first made in cremona, italy, about 200 years ago. these violins sound better than 1 . they even sound better than violins made 2 .
violin makers and scientists try to make instruments(樂器) 3 the italian violins. but they aren’t the same. musicians still 4 the old ones.
some people think it is the age of the violins. but not all old violins sound wonderful. only the old violins from cremona are special. so 5 can not be the answer.
other people think the secret to those violins is the wood. the wood must be from certain kinds of trees. but the kind of wood may not be 6 important. it may be more important to cut the wood in a special way. wood for a violin must be cut very 7 . it has to be the right size and shape. the smallest 8 will change the sound of the violin. musicians sometimes think that this was the secret of the italians. maybe they understood more than we do about how to cut the wood.
size and shape may not be the answer, either. scientists can make new ones that are exactly the 9 size and shape. but the new violins still do not sound as nice as the old ones. some scientists think the secret may be the varnish(清漆). varnish is 10 covers the wood of the violin. it makes the wood look shiny. it also helps the sound of the instrument. but no one knows what the italian makers used in their varnish.
1. a. the other b. another c. any other d. others