下列婚配方式中，后代患遗传病的可能性最大的是 A．南方人和北方人 B．同一姓氏的

透明胶片上的“H→I→X”，用显微镜观察到的是

A．H←I←X

B．H→I→X

C．X←I←H

D．X→I→H

电阻R和电动机M相串连接到电路中，如右图所示．已知电阻R跟电动机线圈的电阻相等，电键接通后，电动机正常工作．设电阻R和电动机两端的电压分别为U₁和U₂；经过时间t，电流通过电阻R做功W₁，产生的电热为Q₁；电流通过电动机M做功W₂，产生的电热为Q₂，则有（　　）

A．U₁＜U₂，Q₁=Q₂

B．W₁=2W₂，Q₁=Q₂

C．W₁＜W₂，Q₁＜Q₂

D．W₁＜W₂，Q₁=Q₂

在开挖限界的周边，适当排列一定间隔的炮孔，在有侧向临空面的情况下，用控制抵抗线和药量的方法进行爆破，使之形成一个光滑平整的边坡。这种爆破方法是()。

A.光面爆破

B.定向爆破

C.预裂爆破

D.微差爆破

阅读理解。

     Paris is the capital city of the European nation of France. It is also one of the most beautiful and most

famous cities in the world.

     Paris is called the City of Light. It is also an international fashion centre. What women are wearing in

Paris will be worn by women all over the world. Paris is also a famous world centre of education. For

example, it is where the headquarters of UNESCO, the United Nations Educational, Scientific and Cultural

Organization.

     The Seine River divides the city into two parts. Thirty-two bridges cross this beautiful river. The oldest

and perhaps the most well-known is the Point Neuf, which was built in the sixteenth century. The Sorbonne,

a famous university, stands on the left bank (south side) of the river. The beautiful white church Sacre Coeur

lies on the top of the hill called Montmartre on the right bank (north side) of the Seine.

     There are many other famous places in Paris, such as the famous museum, the Louvre, as well as the

Notre Dame. However, the most famous building in this city is Eiffel Tower.

     Paris as well as the Cathedral of Notre Dame is named after a group of people called the Parisaii. They

built a small village on an island in the middle of the Seine River about two thousand years ago. This island,

called the He de la Cite, is where Notre Dame lies. Today around eight million people live in the Paris area.

1. Why is Paris regarded as a fashion centre in the world?

A. Because the clothes there are the most expensive in the world.

B. Because there is the largest collection of the clothes in Paris.

C. Because Paris has the most beautiful clothes in the world.

D. Because Paris plays a leading role in the fashion world.

2. The Point Neuf was built in _____.

A. the 1500s

B. the 1600s

C. the 1700s

D. the 1800s

3. From the passage we know Paris is named after _____.

A. a group of people

B. a famous river

C. a famous museum

D. a famous writer

4. We can conclude that Notre Dame is _____.

A. on the left bank of the Seine River

B. on the right bank of the Seine River

C. on neither bank of the Seine River

D. in Louvre

5. Paris is famous for the following EXCEPT _____.

A. fashion

B. some bridges

C. the Sorbonne

D. the Eiffel Tower

骨盆的常规摄影位置是

A．前后位
B．后前位
C．侧位
D．斜位
E．轴位