问题 单项选择题

试述左心血液循环的主要途径

A.血液从外周动脉到毛细血管,再经外周静脉回主动脉
B.血流从左心到主动脉再到外周动脉、毛细血管网、静脉系统、最后经腔静脉回右心房
C.血流从腔静脉到右心房法到右心室
D.血流从肺动脉到肺静脉
E.血流从右心房到左心房到肺动脉

答案

参考答案:B

解析: 左房-左室-主动脉-外周动脉-毛细血管-静脉系统-腔静脉-右房-右室-肺动脉-肺静脉-左房。

阅读理解

How could I turn down an opportunity for a weeklong cruise on a luxury motorsailer in the Andaman Sea? Without a second thought, I packed my bags and jumped on a plane to Singapore, and the following day I found myself looking out the airplane window at the beautiful waters surrounding the island of Langkawi off the coast of Malaysia.

The last time I was in Langkawi was in 2001, when it was relatively quiet. Langkawi has come a long way since then; there are 4, 5, and even 6-star hotels, as well as spas, golfing, horseback riding and even a cable car taking visitors to the highest point on the island.

At the Langkawi International Airport I met my shipmates and we were driven to Pantai Tengah with a quick pit stop for sunblock and duty-free goodies. Many other shopping opportunities abound since Langkawi was designated as a duty-free zone in 1987 to entice tourists to the island.

A luxurious yacht tender picked us up. Phillipe, the first mate, maneuvered the tender between sailboats and as we went around a small island there she was, S/V Blue Gold. This majestic 10-passenger sailboat—all 165 feet of her—had been built in Italy and recently underwent a full retrofit. Once aboard, the crew welcomed us with refreshments and big smiles. Before we got too comfortable and settled into the plush comforts of the boat, Alain, the captain, took us on a tour of Blue Gold’s impressive accommodations. The master suite had a king-size bed, with a lounge area and “his & hers” wardrobes. The VIP cabin had a queen-size bed, also with a lounge area. Both had ensuite bathrooms.

The first evening aboard was the perfect start to our voyage—a small cocktail party followed by a light meal of seared tuna salad. It was exactly what our jet-lagged bodies craved, and we all slept very well aboard what would become our new home for the next 7 days.

In the morning after breakfast, we sailed to Pulau Ta Ngah (also spelled “Pulau Tengah”; pulau means island in Malay). In the 1970s the site had been a Vietnamese refugee transit camp. Not long after the end of the war, the camp was shut down and the island was gazetted as a marine park by the Malaysian government. Officially “uninhabited,” it does boast a golf course, but we were unable to determine if it was still in operation. The most intriguing event on the island occurs in July when the giant leatherback turtles lay their eggs on a beach on Ta Ngah.

小题1:Where is Langkawi?

A.In Pulau Ta Ngah

B.In Malaysia

C.In the Atlantic Ocean

D.In The Arctic小题2:We know from the passage Langkawi________.

A.has become prosperous in the past decade

B.was a noisy industrial city twenty years ago

C.has no three-star hotels nowadays

D.is best known for its horse riding races小题3:S/V Blue Gold is __________.

A.a small island with most beautiful sceneries we have ever seen

B.a luxurious 6-star hotel with best food and service

C.a VIP cabin with 9 queen-size beds and ensuite bathrooms

D.a splendid boat with comfortable accommodations小题4:It is implied that _________.

A.many people go golfing on Pulau Ta Ngah every year

B.the Vietnamese War broke out in 1970

C.the author liked the party and meal provided in the voyage

D.people living on Pulau Ta Ngah must have earned a lot of money小题5:The article is probably part of __________.

A.a news report

B.a travel story

C.an advertisement

D.an operating manual

单项选择题