下列哪种疾病是引起月经过多的主要原因（）。 A.浆膜下子宫肌瘤 B.粘膜下子宫肌瘤

引起急性小脑共济失调的常见病原是（）

A.水痘病毒

B.大肠杆菌

C.空肠弯曲菌

D.巨细胞病毒

E.EB病毒

阅读表达。

     Earthquakes are one of the most powerful natural forces on earth and regularly affect people around the

world. Unlike often equally damaging severe weather events such as hurricanes and tornadoes, earthquakes

can hit at any time. Earthquakes can also have a range of magnitudes (震级) with the strongest having

destructive consequences for the areas where they are centered, nearby areas, and even some far away areas

in the case of earthquake-created tsunamis (海啸).

     Until relatively recently, geologists and other scientists were not entirely sure what caused earthquakes.

Now with increasing technology, they are able to give more solid reasons for them.

     Earthquakes are defined as a shaking of the earth's surface that occurs after a release of energy in the

earth's crust (壳).

     Because the earth's crust is made up of numerous plates that are constantly moving slowly, shakings can

occur and result in small earthquakes. Most earthquakes are quite small so they are not readily felt. Larger

and more violent earthquakes are those that occur in a release of energy as the plates slide past or run into

one another.

     Large earthquakes can focus on the boundaries where two plates meet, but they are not limited to these

areas. As the plates move, breaks in the earth's crust develop and earthquakes are often located on them.

These breaks are referred to as faults, of which there are three types and all create earthquakes when they

move.

     In all of these faults, the most damaging earthquakes happen when the blocks of rock become locked

together due to the intense friction (摩擦) created when they move. As they continue attempting to move

once they are locked, pressure continues to build until it has enough energy to move the rock and the blocks

move, creating an earthquake.

     In addition to the main shaking created by an earthquake, there are often foreshocks and aftershocks.

Foreshocks generally increase in magnitude leading to the main earthquake, whereas aftershocks happen

_____ and decrease in strength.

1. What would be the best title for the passage? (Please answer within 10 words.)

    ____________________________________________________________________________________

2. Which sentence in the passage is the closest in meaning to the following one? Most earthquakes are so

    small that people can't feel them when they occur.

    ____________________________________________________________________________________

3. Fill in the blank in the last paragraph with proper words. ( Please answer within 6 words.)

    ____________________________________________________________________________________

4. Why do you think earthquakes happen? (Please answer within 30 words.)

    ____________________________________________________________________________________

5. Translate the underlined sentence in Paragraph 3 into Chinese.

    ____________________________________________________________________________________

男性，65岁。临床诊断直肠癌。肥胖体型，长期吸烟史，高血压病史10年，药物控制良好。在全麻下行直肠癌根治术。术中输血800ml，手术历时5小时。术后第8天拆线，第9天下床，在卫生间突然晕倒，心跳、呼吸骤停，救治无效死亡。死亡的最可能原因是（）。

A.急性大面积心肌梗死

B.急性大面积脑梗死

C.急性肺梗死

D.急性颅内出血

E.阿-斯综合征发作

简述美术教科书的作用。

设计发硬气设计要遵循的原则有哪些？设计目标有哪些？