我国疆域海陆兼备，既是一个陆地大国，又是一个海洋大国．______．

位于番禺区东部珠江出海口的莲花山风景区，距广州市区20多公里，莲花山原名（）。

A、大夫山

B、狮头山

C、狮子山

D、荷花山

补写出下列名句名篇中的空缺部分。

（1）宁溘死以流亡兮，_________________。 （屈原《离骚》）

（2）_________________，桃李罗堂前。 （陶渊明《归园田居》）

（3）_________________，犹抱琵琶半遮面。 （白居易《琵琶行》）

（4）羽扇纶巾，谈笑间，_________________。 （苏轼《念奴娇·赤壁怀古》）

（5）臣少多疾病，九岁不行，_________________，至于成立。 （李密《陈情表》）

（6）位卑则足羞，_________________。 （韩愈《师说》》）

若由于某种原因，将10万元的启动资金用于应付某项突发事件，则杨先生需要修改自己的退休规划，杨先生需要增加每年对退休基金的投入额( )。

A．(A) 27298

B．(B) 30056

C．(C) 39065

D．(D) 41409

A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.

Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤)．They said that they found faults in studies that had reported associations between sunscreen use and higher risk of melanoma.

Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.

But questions has been raised about sunscreen and whether it may has opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.

The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer--- people with fair skin and freckles (雀斑), for example--- are more likely to use sunscreen．As a result, it may appear that sunscreen users get cancer more often.

The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.

小题1:People with fair skin and freckles         .

A．seldom use sunscreen

B．are more in danger of skin cancer

C．can be free from the harm of the sun

D．often expose themselves to the sun小题2:We can learn from the passage that         .

A．sunscreen users get skin cancer more often

B．the volunteers have proved the effect of sunscreen

C．the new study was based on the experiences of volunteers

D．the number of skin cancer patients is increasing in America小题3:Which of the following can be the best title for this passage?

A．Sunscreen to Prevent Skin Cancer

B．Sunscreen to Increase Skin Cancer

C．Skin Cancer Caused by Sunscreen

D．Skin Cancer Caused by Freckles

确定房间的平面尺寸应主要考虑哪些要求？