19．
A：Can I help you？
B：Yes，please．（56）D
A：OK． What color do you want？
B：Blue．
A：（57）B．
B：It looks nice． How much is it？
A：Nine dollars．
B：I'll take it．（58）F．
A：Two dollars for one pair andthree dollars for two pairs．
B：（59）G．
A：Here you are．
B：Thank you．
A：（60）A．
| A． You're welcome． B． How about this one？ C． I like it very much． D． I need a sweater for school． E． It's very cheap． F． How much are those yellow socks？ G． Great！I'll take two pairs． |
B：Yes，please．（56）D
A：OK． What color do you want？
B：Blue．
A：（57）B．
B：It looks nice． How much is it？
A：Nine dollars．
B：I'll take it．（58）F．
A：Two dollars for one pair andthree dollars for two pairs．
B：（59）G．
A：Here you are．
B：Thank you．
A：（60）A．
16．Dear Jack，
I collect butterflies（蝴蝶）for a hobby． In my butterfly （21）B，each one is different from another． Now I （22）Cmore butterflies for a show． If you have one，would you like to send it to me to （23）Bto my collection？If one hundred people send me one butterfly each，I will have （24）Ahundred butterflies． It's really great！
Looking forward to your （25）A．
Yours，
Mark
I collect butterflies（蝴蝶）for a hobby． In my butterfly （21）B，each one is different from another． Now I （22）Cmore butterflies for a show． If you have one，would you like to send it to me to （23）Bto my collection？If one hundred people send me one butterfly each，I will have （24）Ahundred butterflies． It's really great！
Looking forward to your （25）A．
Yours，
Mark
| 21．A．achievement | B．collection | C．attention |
| 22．A．collected | B．had collected | C．am collecting |
| 23．A．afford | B．add | C．belong |
| 24．A．another | B．more | C．other |
| 25．A．reply | B．decision | C．direction |
15．
When you are out on the water，you will need to make sure that everyone is safe．This is especially true for children and boats while water skiing（滑水）．You have to make sure that （66）Ethe way that they should be when out on the water．This is the only way that （67）A．You need to make sure that you are able to keep a child safe when they are on the water．This is very important because it is well known that （68）D．It is easy to miss something，and an accident can happen at any given moment．You need to pay special attention to children and boats while water skiing so that it can be a great time．
Children should not be in the boat when others are water skiing，however （69）B．If possible，you should make necessary arrangements（安排） to have someone watch the child while you are water skiing．This is just a better and safer way for you to have a good time out on the water with no worries．When （70）C，it is important that he is skilled out on the water．You need to make sure that the child is ready to take on the water and use what you teach them to be safe and have fun in the water．
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| A．everyone will be able to have a good time B．there is no other choice sometimes C．a child decides to water ski D．children can get into trouble at any moment E．everyone is protected |
Children should not be in the boat when others are water skiing，however （69）B．If possible，you should make necessary arrangements（安排） to have someone watch the child while you are water skiing．This is just a better and safer way for you to have a good time out on the water with no worries．When （70）C，it is important that he is skilled out on the water．You need to make sure that the child is ready to take on the water and use what you teach them to be safe and have fun in the water．