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在窗体中添加一个命令按钮(名称为Commandl) ，然后编写如下代码： Private Sub Commandl_Click() Static b As Integer b＝b+1 End Sub 窗体打开运行后，单击三次命令按钮后，变量b的值是______。

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在VBA中，如果没有显示声明某个变量的数据类型，则此变量的默认数据类型为 ______。

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简述艺术家的修养和能力。

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The Case of the Disappearing Fingerprints One useful anti-cancer drug can effectively erase the whorls and other characteristic marks that give people their distinctive fingerprints. Losing (51) become troublesome. A case released online in a letter by Annals of Oncology indicates how big a (52) of losing fingerprints is. Eng-Huat Tan, a Singapore-based medical doctor describes a 62-year old man who has used capecitabine to (53) his nasopharyngeal cancer. After three years on the (54) , the patient decided to visit U.S. relatives last December. But he was stopped by U.S customs officials (55) 4 hours after entering the country when those officials couldn’t get fingerprints from the man. There were no distinctive swirly (56) appearing from his index finger. U.S. customs has been fingerprinting incoming foreign visitors for years, Tan says. Their index fingers are (57) and screened against digital files of the fingerprints of bad guys—terrorists and potential criminals that our federal guardians have been tasked with keeping out of the country. Unfortunately, for the Singapore travelers, one potential (58) effect of his drug treatment is a smoothing of the tissue on the finger pads. (59) , no fingerprints. "It is uncertain when fingerprint loss will (60) to take place in patients who are taking capecitabine," Tan points out. So he cautions any physicians who (61) the drug to provide their patients with a doctor’s note pointing out that their medicine may cause fingerprints to disappear. Eventually, the Singapore traveler made it into the United States. I guess the name on his passport didn’t raise any red flags. But he’s also now got the explanatory doctor’s note-and won’t leave home (62) it. By the way, maybe the Food and Drug Administration, (63) approved use of the drug years ago, should consider (64) its list of side effects associated with this medicine. The current list does note that patients may experience vomiting, stomach pain and some other side effects. But no where (65) it mention the potential for loss of fingerprints.

A. prevent
B. preserve
C. presume
D. prescribe

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在对使用五大湖中的两个湖的十处沙滩的8000多人的调查研究中，多伦多大学的生态学家们发现游泳的人中呼吸疾病和胃肠疾病的患病率达69.6%，而没有游泳的人这两类病的患病率是29.5%。从上述数据能最恰当地得出如下哪个结论

A. 人们容易低估在这些湖中游泳的危险。
B. 在这两个湖中任意一个湖中游泳患上呼吸道和胃肠疾病的患病率比在其他湖中游泳的患病率高。
C. 除了呼吸道、胃肠疾病外的疾病不大可能与在这两个湖中的一个湖中游泳有关。
D. 在这些湖中游泳与呼吸道、胃肠疾病之间的联系为这二者之间的因果关系提供了证据。
E. 在这些湖中游泳的一大部分人对游泳可能引起的疾病有免疫力。

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