2011年1月14日上午中国工程院院士、内科血液学专家王振义因在白血病(血癌)研究方面的卓越成就而荣获2010年度国家最高科学技术奖。在儒家“改邪归正”思想的指导下，1986年王振义在国际上首先创导口服全反式维甲酸诱导分化治疗急性早幼粒细胞白血病，获得很高的缓解率，为“在不损伤正常细胞的情况下，恶性肿瘤可以通过诱导分化，转变为成熟的正常细胞”这一新的理论，提供了成功的范例。根据上述资料，下列说法错误的是[ ]
A．生物体内全反式维甲酸在核糖体上合成
B．“细胞分裂是细胞分化的基础”，这为“恶性肿瘤可以通过诱导分化，转变为成熟的正常细胞”提供了理论思路
C．细胞癌变是原癌基因和抑癌基因突变的结果
D．相对于“放疗”、“化疗”，口服全反式维甲酸的副作用大大降低
答案：A
It is commonly believed among many Chinese that Westerners who take “Yes’，and “No” by their facial expressions are more straightforward than Chinese. Normally Westerners don * t have to adopt Chinese ways like sweeping the floor or constantly checking the clock to indicate to a guest that it’ s time to leave. They don’ t have to hesitate in saying “No” when they are not able to, or don’ t want to, offer help to a friend in need. There is no embarrass  ment attached to this behavior. But it is too simple to conclude that Westerners are more direct speakers than the Chinese.There are many occasions when the way Westerners express themselves makes Chinese look more straightforward and honest. When I was a fresh international student，the director of our program once asked students in an e-mail what we thought about a young professor. I simply said ’ “She seems to know a lot but doesn* t know how to teach. ” And the director replied with “Thank you for being honest. ” Only years later when I better understood the new culture，I realized why I had gone too far. If that question were asked now，the reply would have three paragraphs devoted to the qualities of the professor before the last line came out — ” There are some gaps i n her teaching method. ” Still tough, but at least it wouldn't be considered rude.Indeed, the reserved social norms and the deeply - rooted “face issue" make honest speaking risky in China ； Americans have their own ways of being polite. This results partly from political correctness. It also results from several generations of people who have been told they have done well even when they have failed. It may not be unfair to suggest that many Americans are oversensitive and obsessed with a perfect self image. So，the next time you hear about indirect Chinese，it would be worth challenging the source and pointing out that the cultural comparisons are much more complex. But maybe you should do it in a roundabout way，to be polite. 小题1:The passage mainly aims to •
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