问题 单项选择题 A1/A2型题

下述哪项不属于胎儿附属物()。

A.胎盘

B.子宫肌壁

C.羊水

D.脐带

E.胎膜

答案

参考答案:B

解析:胎儿附属物包括胎盘、胎膜、脐带和羊水。唯有B项是不对的,本题选B。避错:本题部分考生易选C,认为羊水是羊膜腔的液体,不属于胎儿附属物,这是不对的,因为羊水使胎儿在宫腔内有一定的活动度,防止胎儿与羊膜粘连;保护胎儿不受外来损伤,与A、D、E选项共同构成胎儿附属物,因此,本题选B。

单项选择题 A1型题
单项选择题

True, some of the attacks against whites by blacks are for money and valuables. But, others ale revenge assaults by blacks for a real or imagined racial insult. It is equally true that the vast majority of violent crimes against whites are committed by whites, while the vast majority of violent crimes against blacks are committed by other blacks. Yet even after discounting crimes that are hastily and erroneously (错误地,不正确地) tagged as racially motivated, many blacks do attack whites because they all white. A 1998 Justice Department study confirmed that nearly 20% of the more than 4,000 hate crimes well committed against whites, and their attackers were blacks. The Southern Poverty Law Center also notes that there is a huge escalation in black-on- white violence from nearly none at the beginning of the 1990s.

A collection of white supermacists and rightist extremist groups have eagerly made black-on- white violence a wedge issue in their movement to paint blacks as the prime racial hate mongers in America. The New Century Foundation, an ultra-conservative think-tank, has launched a full- blown national campaign to alert whites to the danger of black hate crimes. These groups and individuals magnify hate crimes by blacks in order to back their social agenda. They oppose affirmative action programs and per hate crime laws. They downplay, or justify, the proliferation of white-supremacist-tinged paramilitary groups, police violence, and racial profiling. And they lobby hard for more prisons, police, and tougher laws.

Black-on-white violence also reinforces white fears of blacks as the ultimate menace to society. When blacks say or do nothing about these attacks, it is taken by some as a tacit signal that blacks put less value on white lives than black lives. This is a terrible price for black silence on hate crimes committed by blacks.

What can be inferred according to this passage().

A. Some crimes are racially motivated.

B. All black people hate white people.

C. There’s racial discrimination only in America.

D. America is not a good place for immigrants for its serious black-on-white violence.