下面的短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第1～4段每段选择1个最佳标题；(2) 第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。
Clinical Trials
1 Many clinical trials are done to see if a new drug or device is safe and effective for people to use. Sometimes clinical trials are used to study different ways to use the standard treatments so they will be more effective, easier to use, and/or decrease side effects. Sometimes, studies are done to learn how to best use the treatment in a different population, such as children, in whom the treatment was not previously tested.
2 It is important to test drugs and medical products in the people they are meant to help. It is also important to conduct research in a variety of people because different people may respond differently to treatments. Some people participate in clinical trials because they have exhausted standard treatment options. Other people participate in trims because they want to contribute to the advancement of medical
A. Why are clinical trials done
B. Where are clinical trials conducted
C. Who should consider clinical trials and why
D. What should people know before participating in a clinical trial
E. What are clinical trials
F. Are clinical trials safe
| If you look closely at some of the early copies of
the Declaration of Independence, beyond the flourished signature of John Hancock
and the other 55 men who signed it, you will also find the name of one woman,
Mary Katherine Goddard. It was she, a Baltimore printer, who published the first
official copies of the Declaration, the first copies that included the names of
its signers and therefore heralded the support of all thirteen
colonies. Mary Goddard first got into printing at the age of twenty-four when her brother opened a printing shop in Providence, Rhode Island, in 1762. When he proceeded to get into trouble with his partners and creditors, it was Mary Goddard and her mother who were left to run the shop. In 1765 they began publishing the Providence Gazette, a weekly newspaper. Similar problems seemed to follow her br A. she helped write the original document B. she published the document C. she paid to have the document printed D. her brother was in prison [单选题]搭建避难所时要注意的问题说法错误的是（）。
A.山洞作为避难所时，要记住里面可能会很潮湿，同时可能会有其它生物存在 B.冬季时，不宜依靠机身搭建避难所，因金属散热较快 C.避免在低洼潮湿的溪谷处修建避难所，防止被洪水冲走 D.可以在茂密及人深的草木丛林中建修避难所 [单选题]在开放经济条件下，紧缩性的财政政策将使得（）。
A.国内失业率上升 B.进口增大，国际收支恶化 C.利率下降，资本外流增加 D.通货膨胀上升 [单项选择]下列各项属于企业所得税发中规定的居民企业的是（）。
A. 依照中国法律在中国境内成立的合伙企业 B. 依照中国法律在中国境内成立的有限责任公司 C. 依照外国法律成立且实际管理机构在中国境外的企业 D. 依照中国法律在中国境内成立的个人独资企业 [单选题] 流量愈大,靶式流量计上的靶片所受的作用力( ).
A.愈大 B. 愈小 C. 等于零 D. 无影响 [单选题]某工程设计有两个方案，甲方案功能评价系数为0.85，成本系数0.92，乙方案的功能评价系数为0.6，成本系数为0.7，则最优方案的价值系数为( )。
A.0.857 B.0.911 C.0.924 D.0.952 [单项选择]下列建设用地中，（）的使用权不得出让、转让。
A. 承租国有建设用地 B. 作价出资取得的国有建设用地 C. 集体"四荒"土地 D. 农民集体土地 [多选题]矛盾普遍性和特殊性的关系是( )
A.矛盾特殊性寓于矛盾普遍性之中 B.矛盾普遍性寓于矛盾特殊性之中 C.共性和个性的关系 D.绝对和相对的关系 [单项选择]留置导尿病人的护理，下述哪项与预防泌尿系统结石或感染无关( )。
A. 更换贮尿袋时，防止尿液逆流 B. 鼓励病人多饮水，增加排尿量 C. 鼓励病人经常变换卧位 D. 作间歇性引流夹管 E. 保持尿道口清洁，定时膀胱冲洗 [判断题]OMC系统启用后，C2类施工也将纳入《行车通告》中
A.正确 B.错误 [简答题]简述人际传播的社会功能。
[多选题]计算机语言处理程序:( )、解释程序。
A.编译程序 B.语言程序 C.汇编程序 D.高级程序 我来回答: 提交
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