问题 名词解释

附加体(episome)

答案

参考答案:

附加体(episome):在细胞中或以游离态、或以与染色体相结合的状态存在着的遗传结构,它的存在给细胞带来一定的遗传性状,但它们的缺失并不造成细胞的死亡。

填空题
阅读理解

Italian Lakes and Greek Islands(12Days)

Prices starting from $1,999

Your tour begins in Milan, Italy, and moves on to the pretty Italian Lake District and the attractive resort(胜地)of Stresa, your home for two nights.  Collette Vacations has carefully chosen the Costa Victoria as your home away from home for your 7-night journey along the waterways of the Mediterranean.  The cruise ship is filled with the warmth and culture of Italy and is richly designed with entertainment(娱乐)areas and very good living conditions.  It will take you to the places of your dreams. 

You'll spend 4 days touring Greek cities you've always heard about. In Katakolon, you will have the only unguided tour to nearby Olympia on the whole journey.  Then with a local guide you will visit the Greek islands of Santorini, which is often related to the story of the lost city of Atlantis, and Mykonos, a wonderful island with beautiful beaches. 

Your journey ends in Verona, home of the love story Romeo and Juliet, with a fun-filled farewell dinner-a perfect ending to a pleasant journey. 

12Day, 25Meals:10Breakfasts, 6 Lunches, 9Dinners

Day 1 Overnight flight to Italy

Day 2-3 Regina Palace, stresa, Italy

Day 4-10 Costa Victoria(Costa cruises)

Day 11 Hotel Leopardi, Verona, Italy

Day 12 Leave for home

Please Note:

小题1:How is the journey planned?

A.It starts and ends in Italy.

B.It starts and ends in Greece.

C.It starts in Italy and ends in Greece.

D.It starts in Greece and ends in Italy.小题2:What can be inferred from the travel plan?

A.The price may get lower than those in the plan.

B.The prices include three meals a day.

C.The price is the highest in summer.

D.The prices include entertainment service.小题3:What does the underlined part “the Costa Victoria” most probably refer to?

A.A famous hotel.

B.A beautiful resort.

C.A comfortable ship.

D.A long-distance bus.小题4:Tourists will travel on their own in    .

A.Stresa

B.Olympia

C.Mykonos

D.Verona