美国高等学校一般都实行（）领导下的校长负责制，其大部分成员是（）人员。

细短毛刺（）。

A.瘤细胞浸润及间质反应

B.肿瘤内残存正常含气肺组织

C.肿瘤瘢痕收缩

D.瘤内含气、扩张的细支气管

E.肿瘤钙化或包埋原有钙化灶所致

阅读理解。

     Some of my earliest childhood memories are of the beach-in the hot sun, building sandcastles, burying Dad

in the sand.

     Now the coast has a strangely-pleasant and relaxing attraction. I look forward to a windy clifftop (崖顶)

walk or a rainy day rockpicking just as much as those rare moments when I get to a short sleep in the sun. But

there's nothing more pleasurable than turning up at a beach to find it deserted.

     These are my favorite secret beaches-ones either not well known or take a bit of effort to get to. Most of

those listed scored highly in the Marine Conservation Society Good Beach Guide 2009; the others are too secret

even for them.

     Sennen Cove is just a mile northeast of Land's End, the westernmost point of mainland England. It's a

beautiful spot, with white sands, deep green sea and amazing sunsets over the Isles (群岛) of Scilly, 28 miles

away.

     The west-facing beach is popular with surfers, with bigger waves and winds often found at the Gwenver

end. There's a beach restaurant with good views of the bay and the sunsets.

     The smallest of Isles of Soilly, Bryher is a mile long, half a mile wide-and a natural wilderness of unbelievable

scenery. Walk along the narrow sandy roads to the eastern seaboard and you come to two quiet beaches.

     Green Bay has views over to the palm (棕榈]) trees of Tresco's Abbey Gardens, and a little further south is

Rushy Bay, a beautiful beach facing the deserted island of Samson.

     On Bryher, farm shops sell locally grown produce, and they trust you to leave the money in the pot. It's that

kind of place.

1. According to the passage, which of the following is TRUE?

A. The author is a tourist guide in a tourist agency.

B. The author likes walking on a windy clifftop most.

C. The author wrote the article to advertise for the beaches.

D. The author loves beaches that are not known to most people.

2. Which of the following maps can correctly describe the geography position? (LE= Land's End

    SC= Sennen Cove IS= the Isles of Scilly)

A.  B.  C.  D.

3. From the passage we can know that _____.

A. Bryher is the smallest island in the world

B. Samson is an island on which no man lives

C. Rushy Bay has views over to the palm trees

D. Green Bay is situated to the south of Rushy Bay

4. The best title for the passage is _____.

A. Secret Beaches on the British Isles

B. The Beautiful British Isles

C. The Most Pleasurable Place in Britain

D. My Experience of Searching Beaches

下列属于气－血屏障的结构有（）。

A.肺泡表面液体层

B.Ⅰ型肺泡上皮细胞及其基膜

C.Ⅱ型肺泡上皮细胞

D.薄层结缔组织

E.毛细血管内皮细胞及其基膜

森林病虫害发生面积按危害程度分哪三个等级？

平底磨鞋的水眼可做成（）。

A.直通式

B.旁通式

C.直通式和旁通式两种

D.直通兼旁通式