1千克棉花和1千克食盐，（ ） A．1千克棉花重 B．1千克食盐重 C．一样重

关于我国疆域的叙述，正确的是（　　）

A．我国南北跨纬度近50度，东西跨经度60度以上，因此东西距离大于南北距离

B．我国最南端在南沙群岛中的曾母暗沙

C．与我国云南省接壤的国家有缅甸、泰国、老挝、越南

D．与我国新疆接壤的国家有哈萨克斯坦、吉尔吉斯斯坦、塔吉克斯坦、印度

男，30岁。MRI扫描在肾上腺区可见一直径3cm的肿物，外缘光滑。T₁WI呈低信号，T₂WI信号强度类似脑脊液，注射Gd-DTPA后不强化，应诊断为（）

A.肾上腺腺瘤

B.肾上腺囊肿

C.嗜铬细胞瘤

D.神经母细胞瘤

E.肾上腺转移瘤

阅读理解。

                                                     Phillip Island Penguins (企鹅)

     The Little Penguin has called Phillip Island home for untold generations. Get to Phillip Island in plenty of

time to watch a summer sunset at Summerland Beach－the stage is attractively set to see the Little Penguin

leave water and step onto land.

     ·Leave Melbourne at 5:30 pm. for a direct journey to Phillip Island

     ·See the Gippsland area－Guinness Book of Records place for the world's longest earthworm (蚯蚓)

     ·Journey along the coastal highway around the Bay with French Island and Churchill Island in the distance

     ·Cross the bridge at San Remo to enter Phillip Island－natural home for Little Penguins and many animals

     ·Take your place in special viewing stands (看台) to watch the daily evening performance of the wild

Little penguins

Ultimate Penguins (+U)

     Join a group of up to 15. This guided tour goes to an attractive, quiet beach to see Little Pen-guins. You

can see penguins at night by wearing a special pair of glasses.

     Adult (成人) $ 60.00 Child $ 30.00

Viewing Platform Penguin Plus (+V)

     More personalized wildlife viewing limited to 130 people providing closer viewing of the penguin arrival

than the main viewing stands.

     Adult $ 25.00 Child $ 12.50

Penguin Skybox (+S)

     Join a group of only 5 in the comfort of a special, higher-up viewing tower. Gain an excellent overview

of Summerland Beach.

     Adult 16 yrs + $ 50.00

1. What kind of people is the text mainly written for?

A. Scientists.

B. Students.

C. tourists.

D. Artists.

2. We can learn from the text that Little Penguins _____.

A. have been on Phillip Island for years

B. keep a Guinness record for their size

C. are trained to practice diving for visitors

D. live in large groups to protect themselves

3. How much would a couple with one child pay for a closer viewing tour?

A. $ 37.50.

B. $ 62.50.

C. $ 180.00.

D. $ 150.00.

某宾馆工程，地下1层，地上20层，为现浇钢筋混凝土剪力墙结构，建筑面积24 000mz，混凝土设计强度等级为C30。该工程为加快施工进度选用硅酸盐水泥，得到了建设单位、监理单位的认可。同时，该工程使用低合金高强度结构钢作为建筑材料。

HRB335级钢筋和HRB400级钢筋为( )。

A．低碳钢

B．低黏结钢

C．低弹性钢

D．低合金钢

使用二氧化碳气体激光器切割时，一般在光束出口处装有喷嘴，用于喷吹（）等辅助气体，以（）。