患者男，38岁，在夏季进行双抢劳动后，先有大量汗出，然后四肢肌肉、腹壁肌肉阵发

阅读理解。

     Traveling is fun because you can see how people in other parts of the

world live. One thing travelers don't of-ten think about before traveling is

how other cultures bathe ( take a bath). And bathrooms in many countries

may be different from the kind you are used to.

     In the United States , most people take a shower once a day in the

morning. The showerhead is usually mounted on the wall and cannot be

moved. The bather simply stands under the water, gets wet, scrubs (撩) with

soap and often a washcloth , and then rinses off(洗掉) .

     Children often take a bath each night and enjoy playing with small toys

such as boats and rubber ducks. Many adults, especially women, enjoy a

relaxing bath to get rid of stress at the end of the day.

      It is important to remember that when you take a shower or bath in the

United States, you should be careful to keep the water inside the bathtub or

shower. Unlike bathrooms  in  many  countries, there is no drain (下水道 )in the floor. If water gets on the floor it cannot go anywhere and must be

cleaned up with a towel or mop. It can also cause problems for the floor. So be careful.

l. We can't read it,but the reading infers that_______.

A. Americans often take a shower in the morning

B. children often bathe before going to bed at night

C. many women take quite some time to have a bath in the evening

D. Americans bathe in the same way as in some other countries

2. We can get "hint" in the reading that_______.

A. all the bathrooms in different countries are the same

B. Americans don't clean the floor after bathing at home

C. problems will appear if you bathe with too much water in the bathtub in

the US

D. Americans enjoy traveling in the world

3. The reading doesn't tell,but we can see that_______.

A. traveling to different countries can bring us a lot of knowledge

B. a towel or a mop is used for bathing in America

C. without toys children don't bathe or take a shower

D. soap is the only thing that can help people scrub the dirt off their bodies

They talked about the persons and things ______ they remembered at school. [ ]

A. which

B. who

C. that

D. whom

在使用差压变送器测量甲醇装置的液位和流量测量时，常使用隔离液将被测介质与变送器隔离，试述使用隔离液的原则。

线路施工正在立杆、撤杆时，坑内及电杆（）的下方不许人员停留。

单倍体育种能明显缩短育种年限，该育种方法主要依据的遗传学原理是（）

A．基因自由组合

B．基因突变

C．染色体变异

D．基因重组