If you work hard, it’s not difficult for

题型:选择题

问题:

If you work hard, it’s not difficult for you ______ English well.

A.learn

B.learns

C.to learn

D.learning

考点:分词不定式动名词
题型:选择题

某市2005年四家商场销售额 (单位:万元)

年销售额最多的商场是()。

A.第一商场

B.第二商场

C.第三商场

D.第四商场

题型:选择题

八年级的小名小时候总爱在妈妈怀里撒娇,现在她长大了,不再撒娇了,反而觉得妈妈常常唠唠叨叨,很烦。你认为下列小名对妈妈的态度,可取的是[ ]

A.话不投机半句多,妈妈不能再这样罗嗦了

B.我已经长大了,妈妈没必要再那样关心我

C.妈妈老了,观念跟不上时代了

D.妈妈对我苦口婆心是因为爱我,我应该理解妈妈

题型:选择题

关于感知过度的描述,错误的是()。

A.是起搏器随访中常出现的问题之一

B.单极感知比双极感知容易出现

C.常见的原因包括感知阈值低、交叉感知、T波感知、电磁干扰等

D.感知过度易引起竞争性心律失常

E.对交叉感知引起的感知过度,可适当降低对应心腔的起搏输出电压

题型:选择题

Celebrate. Celebrate. Physicians are delighted with a Food and Drug Administration (FDA) advisory panel’s recommendation earlier this year that Vioxx and its cousins Bextra and Celebrex (all medicines known as Cox-2 inhibitors) should remain on the market, despite evidence they increase heart disease risk in some people. The panelists reached their decision after weighing all the data and concluding the benefits of these pain-relieving drugs outweighed the risks.
Specifically, these scientists acknowledged that, for some patients, these prescription drugs were uniquely effective in reducing pain from arthritis and other causes. For others—concerned about ulcers associated with aspirin and other OTC analgesics—the Cox-2 inhibitors offered the advantage of minimizing potentially serious effects of stomach irritation.
Now is an appropriate time for everyone to take a fresh look at the benefit-risk equation for Vioxx and the other Cox-2 inhibitors.
The risks-increased risk of heart disease in some who use the drugs—have been well publicized. Much less publicity has been given to a spectrum of real and potential benefits that go way beyond reduced risk of stomach irritation. These little-discussed benefits would have been lost, perhaps permanently-had Vioxx, Bextra and Celebrex been driven from shelves in pursuit of perfect safety, an unattainable goal.
For example, there is substantial evidence Cox-2 inhibitors can reduce development of colon polyps, which may become colon canceL Indeed. Celebrex is FDA-approved for those genetically prone to colon cancer. Ironically, the 2004 study that revealed the elevated heart attack risk of Vioxx was primarily designed to further establish the drug’s effectiveness in protecting against colon cancer. And while the results of that interrupted trial have not yet been published, there is good reason to believe they will confirm the protective effects against colon cancer established in research over the last 10 years.
At the time of its withdrawal from the market last fall, studies of Vioxx as well as the other Cox-2 drugs suggest that they had other anti-cancer properties as well, possibly reducing the risk of malignancies of a number of sites, including the lung and esophagus.
Had these drugs been dismissed, their untapped promise for prevention would have evaporated well before it was evaluated and applied to save lives. Fortunately, cooler and wiser heads prevailed.

Cox-2 inhibitors were once banned from the market because they were found to increase the risk of triggering ______.

A.colon cancer

B.stomach problems

C.heart disease

D.genetic problems

题型:选择题

人禽流感抗病毒治疗药物不包括

A.金刚烷胺
B.金刚乙胺
C.病毒唑(利巴韦林)
D.奥司他韦(达菲)
E.阿昔洛韦

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