长期服用易产生耐受的药物是A．硝酸甘油 B．硝苯地平 C．卡托普利 D．维拉帕米 E

阅读理解

       A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increase 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 flaws 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(白皙的肤色) 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.

1. The underlined word "flaws" in the 2nd paragraph most probably means          .

A. evidence

B. facts

C. faults

D. failures

2. 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

3. 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

4. Which of the following can be the 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

胶片的标准储存温度为（）

A.10～15℃

B.15～18℃

C.18～22℃

D.20～25℃

E.22～26℃

患者女性，G2P0，妊娠33周。因下肢浮肿一周，血压升高3天入院。入院前曾行产前检查5次，孕22周作平均动脉压测定为94mmHg。一周前出现下肢浮肿，休息后不消退，3天前检查血压升高。检查：BP160/105mmHg，下肢浮肿（+），宫高29cm，腹围89cm，胎位LOA，头先露，胎心140次/分。化验尿蛋白（++）。

进一步应做哪些检查（）

A.红细胞压积

B.尿常规.尿比重

C.眼底检查

D.血尿酸.尿素氮检查

E.胸部X线摄片

F.血小板计数，出凝血时间

正常人一般左肺由几个肺段组成（）

A.7

B.8

C.9

D.10

E.11

锅炉发生负荷骤减时，首先应（）。

A、打开放空阀

B、保持水位

C、减弱燃烧

D、加强燃烧