ABO血型反定型是用已知ABO血型红细胞作为试剂，利用其（）鉴定血清中的（）。

定义在R上的函数y=f（x），满足f（4-x）=f（x），（x-2）f'（x）<0，若x₁＜x₂且x₁+x₂=4，则有[ ]

A.f（x₁）＜f（x₂）

B.f（x₁）＞f（x₂）

C.f（x₁）=f（x₂）

D.不确定

现在在一些家庭中有一种奇怪的 (53) ：父母喜欢看书，却往往等到孩子上床入睡之后才坐下来看，结果，孩子竟然一直不知道自己的爸爸妈妈喜欢看书。专家建议，在家里，父母应该尽量多地和孩子在一起看书，同时还可经常与孩子在一起交流读书的方法和阅读的 (54) ，鼓励孩子把书中的故事讲给自己听，也把自己的观点讲出来，然后大家一起讨论。如果经常这样做，孩子的阅读兴趣就会变得更加 (55) ，不论是孩子的阅读水平还是表达能力 (56) 。

孩子的阅读兴趣就会变得更加（）

A．强烈 

B．激烈 

C．繁荣 

D．深刻

公众责任险承保的是投保人的损害赔偿责任，没有实际标的，是一种（）保险。

A．有形财产

B．无形财产

C．固定资产

D．动产

Medical research findings are customarily not made public prior to their publication in a medical journal that has had them reviewed by a panel of experts in a process called peer review. It is claimed that this practice delays public access to potentially beneficial information that, in extreme instances, could save lives. Yet prepublication peer review is the only way to prevent erroneous and therefore potentially harmful information from reaching a public that is ill equipped to evaluate medical claims on its own. Therefore, waiting until a medical journal has published the research findings that have passed peer review is the price that must be paid to protect the public from making decisions based on possibly substandard research.
The argument assumes that

A．unless medical research findings are brought to peer review by a medical journal, peer review will not occur.

B．anyone who does not serve on a medical review panel does not have the necessary knowledge and expertise to evaluate medical research findings.

C．the general public does not have access to the medical journals in which research findings are published.

D．all medical research findings are subjected to prepublication peer review.

E．(E) peer review panels are sometimes subject to political and professional pressures that can make their judgments less than impartial.