Unit 20 Archaeology教案

you may wonder what makes the tower lean. if you look at the picture, you will see that one side of the tower is deeper in the earth than ___8___ other. the foundation on ___9___ the tower rests has sunk into the soil on the leaning side. why does this happen?
pisa’s tower ___10___ 14,500 tons. the soil of the town is a mixture of a clay and sand and water. a heavy tower ___11___ on soil like this must have a very strong foundation. the leaning tower’s foundation is just not deep or wide enough for the tower ___12___ on it.
can nothing be done about the tower?
___13___, italian engineers have several plans. they don’t want to make the tower straight―just keep it from leaning any further. so all the plans call for a new foundation that won’t sink.
but a new foundation can’t be built ___14___ the tower is resting on the old one. the tower must be ___15___ with jacks（千斤頂）. they would be like jacks we use to raise cars when changing a tyre. only these jacks would be giant ones. one plan calls for 15 of them to be placed __16___ the tower. each of the giant jacks would be on its own foundation. and each of them could lift 1,000 tons. the 15 jacks would raise the 14,500 ton tower and hold it up while the new foundation ___17___.
the italian engineers are ___18___ the best plan to save the tower. they know that any plan takes a lot of money. they are trying to ___19___ the money from the italian government. but many italians refuse to believe that the old tower is ___20___.“it leans and leans and leans,”they say,“but it will never fall down.”
1.a. in greece b. in india c. in belgium d. in italy
2.a. say b. speak c. tell d. judge
3.a. sink b. fall c. drop d. break
4.a. another b. the other c. others d. other
5.a. feeling b. feeling like c. to feel d. feel like
6.a. saved b. save c. safe d. safety
7.a. will b. shall c. do d. can
8.a. / b. the c. an d. a
9.a. where b. which c. that d. it
10.a. weighs b. weights c. weigh d. weighty
11.a. to be built b. building c. built d. build
12.a. standing b. stand c. stands d. to stand
13.a. yes b. no c. ok d. not
14.a. during b. while c. and d. for
15.a. hanged b. lift c. raised d. rose
16.a. under b. below c. around d. about
17.a. is building b. is built c. being built d. is being built
18.a. searching b. researching c. searching for d. finding
19.a. get b. receive c. accept d. make
20.a. in need b. in trouble c. in danger d. in fact
（四）高考題（每小題1分，共5分）
1. it was about 600 years ago __________ the first clock with a face and an hour hand was made.（1997，全國，1分）