采用等离子点火燃烧器，点火和稳燃与传统的燃油相比有几个优点经济、环保、高效、（）、安

患者，男性，67岁。左腹股沟可复性包块，坠入阴囊5年。病人吸烟40年，偶有咳嗽及夜尿频，近3个月来夜尿次数增多。查体：左侧腹股沟韧带中点上方至阴囊有梨形包块6cm×8cm，平卧时可还纳腹腔，压迫内环口站立不复出，肛诊前列腺增大，中间沟消失。X线肺部摄片阴性。

最适当的治疗方法是（）

A.麦克凡（McVay）法疝修补术

B.佛格逊（Ferguson）法疝修补术

C.疝成形术

D.巴西尼（Bassini）法疝修补术

E.暂不宜手术

阅读表达。阅读下面短文，请根据短文后的要求进行答题（请注意问题后的字数要求）。

     [1]Medical research is leading American education officials to consider having high school classes start

later in the morning. The research says that teenagers are more awake later at night than adults are. When

staying up late at night, the teenagers have problems learning early in the morning.

     [2]Researchers in the state of Rhode Island measured the amount of the hormone (荷尔蒙) melatonin

(降黑素) in people's mouths at different times of the day. Melatonin causes people to feel sleepy.

     [3]They found that melatonin levels rise later at night in teenagers than they do in children and adults. It

remains at higher levels in teenagers later in the morning. They said this shows that teenagers have difficulty

learning early in the morning. Yet most school systems in the United States begin high school classes at about

seven o'clock.

     [4]A few school districts have made some changes. In 1996, school officials in Edina, Minnesota, changed

the start of classes from seven thirty to eight thirty. Two years later, the nearby city of Minneapolis did the

same. Teachers there reported that students were no longer sleepy in class and were happier. Staying in school

later in the day did not seem to be a problem for students who had jobs after school either.

     [5]Health experts say that teenagers need between eight and nine hours of sleep a night. Students _____ are

likely to be late for school, fail to do their homework, fall asleep in class and have trouble taking part in class

discussions.

     [6]Some people, however, don't support a later start time because they say that it would limit the time for

practicing sports after school. However, the Minnesota schools found that this did not hurt school sports

competitions.

     [7]More American school districts are discussing the possibility of changing high school start times.

Researchers and teenagers say that they cannot make the change quickly enough.

1. What is the best title of the passage? (Please answer within 8 words.)

    _______________________________________________________________________________________

2. Please fill in the blank in the fifth paragraph with proper words or phrases to complete the sentence. (Please

    answer within 8 words.) 

    _______________________________________________________________________________________

3. Complete the following statement with proper words. (Please answer within 5 words.) 

    If they go to bed very late at night, teenagers _____ early in the morning. 

    _______________________________________________________________________________________

4. Do you think the change is necessary? Why? (Please answer within 15 words.) 

    _______________________________________________________________________________________

5. What does the word "this"(line 3, paragraph 6) probably refer to? (No more than 4 words.) 

    _______________________________________________________________________________________

当房屋中部沉降量较大时，则位于（）的圈梁作用大。

A、基础顶面

B、檐口

C、基础顶面和窗顶

D、窗顶

喉的九条肌肉及其功能，哪项错误（）

A.后环构肌司声带外展

B.侧环构肌司声带内收

C.构状软骨间肌司声带内收

D.甲构肌中心部分为声带，外周部分司喉前庭收缩和松弛

E.环甲肌司喉头紧张度，兴奋时松弛.喉痉挛解除