大学职业搜题刷题APP
下载APP
首页
课程
题库模板
Word题库模板
Excel题库模板
PDF题库模板
医考护考模板
答案在末尾模板
答案分章节末尾模板
题库创建教程
创建题库
登录
logo - 刷刷题
创建自己的小题库
搜索
【单选题】

For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic. Columbus went west to look for better trade routes to the Orient and to promote the greater glory of Spain. Lewis and Clark journeyed into the American wilderness to find out what the U.S. had acquired when it purchased Louisiana, and the Apollo astronauts rocketed to the moon in a dramatic show of technological muscle during the cold war. Although their missions blended commercial and political-military imperatives, the explorers involved all accomplished some significant science simply by going where no scientists had gone before. Today Mars looms (隐约出现) as humanity"s next great terra incognita (未探明之地 ). And with doubtful prospects for a short-term financial return, with the cold war a rapidly fading memory and amid a growing emphasis on international cooperation in large space ventures, it is clear that imperatives other than profits or nationalism will have to compel human beings to leave their tracks on the planet"s reddish suce. Could it be that science, which has long played a minor role in exploration, is at last destined to take a leading role The question naturally invites a couple of others: Are there experiments that only humans could do on Mars Could those experiments provide insights profound enough to justify the expense of sending people across interplanetary space With Mars the scientific stakes are arguably higher than they have ever been. The issue of whether life ever existed on the planet, and whether it persists to this day, has been highlighted by mounting evidence that the Red Planet once had abundant stable, liquid water and by the continuing controversy over suggestions that bacterial fossils rode to Earth on a meteorite (陨石) from Mars. A more conclusive answer about life on Mars, past or present, would give researchers invaluable data about the range of conditions under which a planet can generate the complex chemistry that leads to life. If it could be established that life arose independently on Mars and Earth, the finding would provide the first concrete clues in one of the deepest mysteries in all of science; the prevalence of life in the universe. (362 words) According to the passage, the chief purpose of explorers in going to unknown places in the past was______.

A.
to display their country"s military might
B.
to accomplish some significant science
C.
to find new areas for colonization
D.
to pursue commercial and state interests
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
收藏 - 刷刷题收藏
举报
参考答案:
举一反三

【单选题】慢性盘状红斑狼疮出现

A.
双层导管结构
B.
牙源性上皮岛
C.
角化珠
D.
角质栓塞
E.
胶样小体

【单选题】提早出现的室上型QRS波群,其前有逆行P'波,且P'-R间期<0.12秒,诊断为()

A.
房性期前收缩
B.
交界性期前收缩
C.
室性期前收缩
D.
交界性逸搏
E.
预激综合征

【单选题】软件工程的出现是由于()。

A.
程序设计方法的影响
B.
软件产业化的需要
C.
软件危机的出现
D.
计算机技术的发展

【单选题】不出现骨髓象巨幼样变的疾病()

A.
缺铁性贫血
B.
溶血危象
C.
红血病
D.
白血病前期
E.
恶性贫血

【单选题】壶腹部癌的临床特点是较早出现

A.
转移症状
B.
黄疸、寒战、发热
C.
上腹痛及脊背痛
D.
消化道症状
E.
贫血、消瘦

【单选题】出现性行为问题的主要原因包括( )。

A.
生理、心理和社会环境的因素
B.
个人、集体与社会的因素
C.
感情与理智的冲突
D.
坦率与封闭的矛盾

【单选题】热瘴若出现高热不退,神昏痉厥者,急用

A.
紫雪丹
B.
安宫牛黄丸
C.
牛黄清心丸
D.
牛黄上清丸
E.
牛黄解毒丸
相关题目:
【单选题】慢性盘状红斑狼疮出现
A.
双层导管结构
B.
牙源性上皮岛
C.
角化珠
D.
角质栓塞
E.
胶样小体
【单选题】提早出现的室上型QRS波群,其前有逆行P'波,且P'-R间期<0.12秒,诊断为()
A.
房性期前收缩
B.
交界性期前收缩
C.
室性期前收缩
D.
交界性逸搏
E.
预激综合征
【单选题】软件工程的出现是由于()。
A.
程序设计方法的影响
B.
软件产业化的需要
C.
软件危机的出现
D.
计算机技术的发展
【单选题】不出现骨髓象巨幼样变的疾病()
A.
缺铁性贫血
B.
溶血危象
C.
红血病
D.
白血病前期
E.
恶性贫血
【单选题】壶腹部癌的临床特点是较早出现
A.
转移症状
B.
黄疸、寒战、发热
C.
上腹痛及脊背痛
D.
消化道症状
E.
贫血、消瘦
【单选题】出现性行为问题的主要原因包括( )。
A.
生理、心理和社会环境的因素
B.
个人、集体与社会的因素
C.
感情与理智的冲突
D.
坦率与封闭的矛盾
【单选题】热瘴若出现高热不退,神昏痉厥者,急用
A.
紫雪丹
B.
安宫牛黄丸
C.
牛黄清心丸
D.
牛黄上清丸
E.
牛黄解毒丸
刷刷题-刷题-导入试题 - 刷刷题
参考解析:
AI解析
重新生成
题目纠错 0
发布
刷刷题-刷题-导入试题 - 刷刷题刷刷题-刷题-导入试题 - 刷刷题刷刷题-刷题-导入试题 - 刷刷题
刷刷题-刷题-导入试题 - 刷刷题
刷刷题-刷题-导入试题 - 刷刷题
刷刷题-单词鸭