皮皮学,免费搜题
登录
搜题
【单选题】
Only three strategies are available for controlling cancer: prevention, screening and treatment. Lung cancer causes more deaths than any other types of cancer. A major cause of the disease is not 【21】______ known there is no 【22】______ evidence that screening is much help and treatment 【23】______ in about 90 percent of all cases, at present, therefore, the main strategy must be 【24】______ . This may not always be true, of course, as for some other types of cancer, research 【25】______ the past few decades, has suggested some importance in prevention, screening or treatment. 【26】______ , however, we consider not what research may one day offer but what today's knowledge could already deliver that is not being delivered, then the most practicable and cost-effective opportunities for 【27】______ premature death from cancer, especially lung cancer, probably involve neither screening nor improved treatment, 【28】______ prevention. This conclusion does not depend on the unrealistic assumption that we can 【29】______ tobacco. It merely assumes that we can reduce cigarette sales by raising prices or by 【30】______ on the type of education that already appears to have a 【31】______ effect 【32】______ cigarette assumption by white collar workers and that we can substantially reduce the amount of tar 【33】______ per cigarette. The practicability of preventing cancer by such measures applies not only in those countries, such as, the United States of America, because cigarette smoking has been common for decades, 25 to 30 percent of all cancer deaths now involves lung cancer, but also in those where it has become 【34】______ only recently. China is a good example. Countries where cigarette smoking is only becoming widespread can expect enormous increase in lung cancer during the 1990's or early in the next century, 【35】______ prompt effective action is taken 【36】______ the habit. There are three reasons 【37】______ the prevention of lung cancer is of such overwhelming importance: first, the disease is extremely common, causing more deaths than any other type of cancer now 【38】______ secondly, it is generally incurable and finally, 【39】______ tobacco consumption will also have a substantial 【40】______ on many other diseases. 【21】
A.
publicly
B.
hardly
C.
widely
D.
reliably
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【简答题】护背距离是翼轨工作边至街头部外侧的距离,要求____mm,误差为负,最大为-2mm。
【简答题】护背距离是翼轨工作边至护轨头部外侧的距离,要求 ______________mm,误差为负,最大为-2mm。
【单选题】方法重写与方法重载的相同之处是()
A.
权限修饰符
B.
函数名
C.
返回值类型
D.
形参列表
【单选题】设X,Y相互独立,且都服从标准正态分布 ,令 则Z服从的分布是( ).
A.
N(0,2)分布
B.
单位圆上的均匀分布
C.
参数为1的瑞利分布
D.
N(0,1)分布
【单选题】不可修复废品是指( )。
A.
技术上不可修复的废品
B.
修复费用过高的废品
C.
虽然技术上可修复,但所花费的修复费用在经济上不合算的废品
D.
技术上不可修复的废品 或虽然技术上可修复,但所花费的修复费用在经济上不合算的废品
【单选题】宪法的主要目的是()。
A.
限制最高统治者个人的权力
B.
限制政府的权力
C.
限制执政党的权力
D.
限制法院的权力
【单选题】“(美利坚合众国)在邦联时期,国内经济濒临崩溃,债台高筑,人民的生活陷于困境,终于激起了谢斯起义;外部的英、法、西等国虎视眈眈,伺机侵犯年轻的共和国。”这一材料说明美国制定1787年宪法的主要目的是()
A.
实现公民的民主平等
B.
实践先进的政治理论
C.
建立强大的世界帝国
D.
建立强有力的统一政权
【判断题】结果变量为评价变量的函数。
A.
正确
B.
错误
【判断题】使用 File 类可以修改文件或文件夹的名称
A.
正确
B.
错误
【单选题】设X,Y相互独立,且都服从标准正态分布N(0,1),令Z=X 2 +Y 2 则Z服从的分布是().
A.
N(0,2)分布
B.
单位圆上的均匀分布
C.
参数为1的瑞利分布
D.
N(0,1)分布
相关题目: