近年来，人们常抱怨“现在的西红柿没有以前的味道”。为了解决这一难题，中美联合科研团队历时4年多，对100多种番茄进行了多次严格的品尝实验和基因组测序分析，发现控制风味品质的部分基因位点丢失是导致番茄口感下降的重要原因。这一发现为番茄风味改良奠定了重要理论基础。这说明（    ）

①科学实验是人们能够正确认识番茄口感下降问题的基础

②影响番茄风味的因素的复杂性决定了对其认识的反复性

③发现番茄风味品质的调控机制是该科学研究的最终目的

④科学家们的自觉能动性是能否成功改良番茄风味的前提

加州大学进行了一项研究，发现执行火星任务的宇航员可能遭遇严重的宇宙射线照射，结果会导致老年痴呆的发生。宇宙中高能带电粒子可对宇航员形成威胁，中枢神经系统出现显著的损伤，进而出现认知上的障碍。这一科学发现说明了（    ）

①对事物的认识源自于人为联系的实现过程

②客观可以主动实现与主观的统一

③思维和存在具有同一性

④科研是真理产生的唯一途径

阅读下面短文，根据短文内容，从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。

    A GREAT basketball player will retire (退役) this week. His name is Kobe Bryant.

    Bryant, 1for the Los Angeles Lakers, a team in the NBA. He has been playing with the Lakers for 20 years. But now he is leaving because of2and injuries (伤).

    “My heart can take it, my mind can handle (处理) it,3 my body knows it's time to say goodbye,” he4in his poem (诗) Dear Basketball.

    Bryant is one of the greatest5in NBA. He has won five NBA championships (冠军) and two Olympic gold medals. He also has scored the third largest number of points in NBA history, even6than Michael Jordan.

    Bryant has a real love7basketball. He often starts to practice as8 as 5 am. Everybody knows how hard he works.

    Soon Bryant9 have some time to rest. But no matter (不管如何) what he does next, he said his love for basketball will10change.