法国史学家马克.布洛赫在《为历史学辩护》中指出：“在进行历史研究时，人们往往迷恋于寻

A. Sea kayaking in Turkey

Enjoy beautiful scenery on Turkey’s Turquoise Coast. The water is clear and calm with temperatures of 25º–28º in July and August. You don’t need any previous kayaking experience to enjoy this trip. However, you do need to be quite fit, as you will be on the water for 4–6 hours a day.

B. Diving holidays in Kenya

Experience diving and sailing in the Indian Ocean in March and April. Enjoy warm, clear water and white, sandy beaches. Spend all of your stay on one of our yachts (游艇) with first-class service and excellent food. Explore remote and unspoilt reefs, and see a wonderful range of underwater sea life.

C. Swimming with dolphins in The Azores Islands, Portugal

Would you like to discover the underwater world of the dolphin? Join us in July or August in the clear waters around the Azores. You will receive training from expert guides to gain confidence in the water with the animals. We often see eight different species of dolphin during our trips.

D. Gulfoss Waterfall in Iceland

Come to Iceland in summer to see the biggest waterfall in Europe. Gulfoss, the ‘Golden Waterfall’ is a truly spectacular sight. The water from the River Hvítá and water from glaciers come together and fall 32m in two stages. You can follow a path quite close to the falls, which provides wonderful opportunities for photos and videos. Warm clothing is essential.

E. Plitvice Lakes, Croatia (克罗地亚)

Set in a National Park, the lakes are Croatia’s most popular tourist attraction. The beauty of the region comes from the 16 lakes, waterfalls, and areas of woodland, where deer, wolves and bears can be found. The park is open all year. There are several walks for all levels of fitness. You can also see the park by boat or bus.

F. Lake Balaton, Hungary

If you enjoy nature, you will love Lake Balaton. Much of the area around the lake is part of a protected National Park. We have expert guides with knowledge of local plants and animals. That will take you on long walks around the park. The marsh area of the lake is home to a wide number of bird species.

以下是五个人的旅游爱好，请匹配每个人拟选择的旅游项目：

小题1:Jonny is crazy about plants and animals in different parts of the world. He travels a lot and each summer he goes to a different place to learn about the local plants and wildlife.

小题2: Leo and his family have already done different water sports in Europe and so want to travel further abroad. They would like to try a new sport and they don’t mind working hard. They are not free to travel until the summer.

小题3: Ellen enjoys being near water but she doesn’t want to do any water sports and she doesn’t like the cold. Walking long distances is rather difficult for her, but she likes being outside and seeing wildlife. She has already been to Hungary. She can travel at any time between November and January.

小题4: Amy and Eric are retired but they are still very active. They enjoy walking and looking at scenery. They would like to go somewhere cool this summer where Amy can take a lot of photos.

小题5:Will is a student of marine biology. He is also a very good swimmer and an experienced diver. He’s looking for a summer holiday where he can learn about animals and help people. He wants to stay in Europe.

写出人口自然增长率、出生率、死亡率三者之间的关系：______________________

（）的研究表明，群体对个人活动起到促进作用，但有时群体也会对个体的活动起阻碍作用。

A．斯金纳

B．阿特金森

C．阿尔波特

D．布卢姆

反射回声的强度取决于（）

A.反射回声的量，声速的衰减程度

B.声速的衰减程度，入射声速与界面的角度

C.反射回声的量，入射声速与界面的角度

D.反射回声的量，声速的衰减程度，入射声速与界面的角度

E.声速的衰减程度

作为中介行为的一种，保险代理人的代理行为代表的利益方是（）

A.保险人

B.投保人

C.收益人

D.被保险人