依据风险标的分类，风险可以分为（）A、自然风险、社会风险、政治风险、经济风险和技术风

关于水痘-带状疱疹病毒（VZV）叙述正确的是（）

A.水痘可反复发生

B.带状疱疹是再次感染VZV

C.患水痘后机体产生特异性体液免疫和细胞免疫，故能阻止病毒激活而发生带状疱疹

D.水痘-带状疱疹病毒可由同一种病毒引起两种不同的病症

E.以上说法均正确

仿照下面的示例，自选话题，另写两句话，要求使用拟人的修辞手法，句式与示例相同。（6分）

雪花不是不知道阳光迟早要来的，但是它愿意在大地上铺展，愿意在泥土上附着，因为存在就不该懦弱。

答：                                                                             

阅读理解。

                                                                        Holidays

Holiday News

     Vacancies (空位) now and in the school holidays at a country hotel in Devon. This

comfortable, friendly home-from-home lies near the beautiful quiet countryside, but just a

drive away from the sea. The food is simple but good. Children and pets are welcome.

Reduced prices for low season.

     The Snowdonia Center The Snowdonia Center for young mountain climbers has a

mountain 1068.The beginners' costs are ￡57 for a week, including food and rooms.

Equipment is included except walking shoes, which can be hired at a low cost.

     You must be in good health and prepared to go through a period of body exercises.

This could be the beginning of a lifetime of mountain climbing adventure.

The World Sea Trip of a Lifetime

     Our World Sea Trip of 2008 will be unlike any holiday you have ever been on before.

Instead of one hotel after another, with all its packing and unpacking waiting and traveling,

you just go to bed in one country and wake up in another.

     On board the ship, you will be well taken care of. Every meal will be first-class and every

cabin like your home.

     During the trip, you can rest on deck(甲板), enjoy yourself in the games rooms and in the

evening dance to our musical team and watch our wonderful play.

     You will visit all the places most people only dream about - from Acapulco and Hawaii to

Tokyo and Hong Kong.

     For a few thousand pounds, all you've ever hoped for can be yours.53.What can you do

1.if you like to go on holidays with pets?

A. Choose the holiday in Devon.

B. Go to the Snowdonia Centre

C. Join the World Sea Trip of 2008

D. Visit Acapulco and Hawaii

2.In what way is the Snowdonia Centre different from the other two holidays?

A. It provides chances of family gatherings.

B. It provides customers with good food.

C. It offers a sport lesson.

D. It offers comfortable room.

3. What is special about the World Sea Trip of 2008?

A. You can have free meals on deck every day.

B. You can sleep on a ship and tour many places.

C. You will have chances to watch and act in a play.

D. You have to do your own packing and unpacking.

4. At the Snowdonia Centre, the beginners' costs of ￡57 do not cover .

A. food

B. rooms

C. body exercises

D. walking shoes

氰基丙烯酸酯胶黏剂的缺点有哪些？