一对夫妇携带有白化病遗传基因,研究证明他们生出的小孩患有白化病的概率为14,不患

题型:解答题

问题:

一对夫妇携带有白化病遗传基因,研究证明他们生出的小孩患有白化病的概率为
1
4
,不患此病的概率为
3
4
;他们生出的孩子是男孩或女孩的概率均为
1
2
.现在已知该夫妇有三个孩子.
(1)求三个孩子是同性别的患病孩子的概率P1
(2)求三个孩子中有两个是患病男孩,一个是患病女孩的概率P2
考点:概率的基本性质(互斥事件、对立事件)
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位于 * * 西侧,专供帝王祭祀土地神、粮食神,祈求全国风调雨顺、五谷丰登的坛庙建筑被称为( )。

A.社稷坛

B.天坛

C.地坛

D.太庙

题型:解答题

阅读下列材料:

材料一  l550年和l551年,在西班牙召开了两次大型辩论会,辩论的主要对手是第三世界主义者拉斯·卡萨斯和欧洲中心论者塞普尔维达。这两次古典式辩论.直指殖民主义理论的核心:世界上有没有劣等民族?先进民族有没有理由对落后民族开战并奴役他们?……

塞普尔维达的论点有:

第一,印第安人犯有偶像崇拜的严重罪行;

第二,印第安人智力低下,是天生的野蛮人和奴隶;

第三,印第安人互相残杀,用活人祭祀,甚至吃人肉,西班牙人有义务拯救受害者。……

材料二 卡萨斯不得不小心翼翼地论证说,惩罚一个陷入迷途的民族是为了教育这个民族,而不是毁灭它,然而战争不会使美洲的印第安人明白自身的谬误,只会增加仇恨。……比起用活人祭祀来,战争是更大的罪恶。

——摘编自索飒《丰饶的苦难——拉丁美洲笔记》。

请回答:

小题1:请以玛雅文明为例,反驳材料一中塞普尔维达的前两个论点。(7分)

小题2:从材料二卡萨斯对塞普尔维达第三个论点的反驳,推断西班牙人是以何种方式“拯救受害者”的?卡萨斯反对这种“拯救”方式的理由是什么?你认为应该以何种方式对待“落后民族”?(3分)

小题3:你认为塞普尔维达论点的实质是什么?(2分)

题型:解答题

Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap.For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users.Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century, there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States.A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice.

Which of the following statements is NOT true

A.Aspirin can relieve pain.

B.Aspirin can reduce fever.

C.Aspirin can relieve inflammation.

D.Aspirin can reduce stomach lining.

题型:解答题

内压法

题型:解答题

脉络膜裂由()。

A.视杯和视柄上方内陷形成

B.视杯和视柄下方内陷形成

C.视杯和视柄周围的间充质形成

D.视杯和视柄部分组织退化形成

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