题目内容

研究表明,很少服用抗生素的人比经常服用抗生素的人有更强的免疫系统。然而,没有证据表明,服用抗生素会削弱免疫系统。 下面哪一项如果正确,最能够调和题干中信息之间的不一致

A. 有些人常吃抗生素类药,因为他们的医生无论是对病毒感染还是对细菌感染都开抗生素类药物。
B. 免疫力强的人很少感染人们通常用抗生素来治疗的疾病。
C. 尽管抗生素会产生许多副作用,有些人依然使用这类药。
D. 免疫力差的人,如果不服用抗生素类药,很难从细菌传染病中恢复过来。
E. 抗生素常常用来治疗被细菌等感染的疾病。

查看答案
更多问题

在非洲草原上,一头凶猛的豹子可以抓住几乎任何一只它决定捕捉的羚羊。而羚羊一旦被饥饿的豹子盯上,它最好的逃生机会,就是这头豹子很快又找到另一只动物作为其攻击的目标。因此,羚羊跟随群体活动可以减少被豹子吃掉的危险。 以下哪一项是上面论证所依据的假设

A. 豹子主要靠捕食羚羊为生。
B. 豹子不能一次吃掉整个羚羊群。
C. 羚羊的奔跑速度非常快,豹子抓到它并不是很容易。
D. 在非洲草原上,豹子是羚羊的主要天敌。
E. 羚羊群中羚羊的绝对数量能够阻止豹子的攻击。

A powerful earthquake struck an area near the northern coast of Chile on Wednesday. The earthquake came a day after an even stronger quake 1 the area. The earlier quake was 2 for at least six deaths.The United States Geological Survey says a 7.8 3 aftershock hit northern Chile late Wednesday night, local time. U.S. officials said the aftershock was centered about 23 kilometers south of the port of Iquique. They said it struck at a depth of 20 kilometers below sea 4 .The aftershock led Chilean officials to order thousands of people away from 5 areas. It also led to warnings of high tsunami waves in parts of the Pacific Ocean. The orders and tsunami warnings were later 6 . Chilean police and soldiers guarded coastal communities to prevent 7 on homes and businesses. Television video showed damaged buildings in Iquique. But officials found surprisingly 8 damage from the quake. President Michelle Bachelet visited the 9 area. She spoke to the nation about the disaster. She also said 10 measures have been taken to protect lives and property. Earthquakes are 11 common in Chile. They are also a fact of life in the American state of California. Scientists say a quake of magnitude eight or higher could strike along the San Andreas Fault in coming years. The San Andreas Fault extends from north to south through California. Thousands died in its last major rupture, or movement. 12 took place near the city of San Francisco in 1906.Smaller earthquakes also can be 13 if they strike close to heavily 14 areas. Safety experts say every home needs to have a plan of action, supplies food and water, and emergency equipment.Kate Hutton is a seismologist at the California Institute of Technology. She specializes in the study of earthquakes. Kate Hutton admits there is no way to 15 earthquakes, so being prepared is the best defense.

A. humid
B. remote
C. urban
D. coastal

A powerful earthquake struck an area near the northern coast of Chile on Wednesday. The earthquake came a day after an even stronger quake 1 the area. The earlier quake was 2 for at least six deaths.The United States Geological Survey says a 7.8 3 aftershock hit northern Chile late Wednesday night, local time. U.S. officials said the aftershock was centered about 23 kilometers south of the port of Iquique. They said it struck at a depth of 20 kilometers below sea 4 .The aftershock led Chilean officials to order thousands of people away from 5 areas. It also led to warnings of high tsunami waves in parts of the Pacific Ocean. The orders and tsunami warnings were later 6 . Chilean police and soldiers guarded coastal communities to prevent 7 on homes and businesses. Television video showed damaged buildings in Iquique. But officials found surprisingly 8 damage from the quake. President Michelle Bachelet visited the 9 area. She spoke to the nation about the disaster. She also said 10 measures have been taken to protect lives and property. Earthquakes are 11 common in Chile. They are also a fact of life in the American state of California. Scientists say a quake of magnitude eight or higher could strike along the San Andreas Fault in coming years. The San Andreas Fault extends from north to south through California. Thousands died in its last major rupture, or movement. 12 took place near the city of San Francisco in 1906.Smaller earthquakes also can be 13 if they strike close to heavily 14 areas. Safety experts say every home needs to have a plan of action, supplies food and water, and emergency equipment.Kate Hutton is a seismologist at the California Institute of Technology. She specializes in the study of earthquakes. Kate Hutton admits there is no way to 15 earthquakes, so being prepared is the best defense.

A. explain
B. respect
C. study
D. predict

Winners do not dedicate their lives to a concept of what they imagine they should be; 1 rather, they are themselves and as such do not use their energy putting on a performance, maintaining pretence and manipulating others. 2 They are aware that there is a difference between being loving and acting loving, between being stupid and acting stupid, between being knowledgeable and acting knowledgeable. 3 They can separate facts from opinions and don"t pretend to have all the answers. 4 They listen to others; evaluate what they say, but come to their own conclusions. 5 Although winners can admire and respect other people, they are not totally defined, demolished, bound, or awed by them.

答案查题题库