一摄影师用照相机对一辆运动的汽车连续进行两次拍照，拍照时间间隔为2s先后拍的照片

除下述哪种液体外，均是等渗液()

A．0.9%NaCl

B．1.4%NaHC0下标3

C．10%G.S

D．2:1液

E．M/6Na-Lact

今天在北京有两条马路分别叫佟麟阁路和赵登禹路，其命名的原因是[ ]

A、他们二人都是出生于北京的名人

B、这两条路是由他们设计的

C、他们在卢沟桥战役中为国捐躯

D、他们为解放北京立下了战功

I have been teaching in the United States for three semesters. During this time, I have been very impressed with the hardworking American students. Tuition fee (学费) in American universities are pretty expensive. Most American students receive little, if any, financial support. As a result, they have to work hard to pay for their tuition and other basic expenses. Tertiary (高等) education is a necessity in today’s workforce. Young people with higher education are rewarded with a good career and better salary. So how do American students support themselves?

All my American students have to work to pay for their tuition. For this reason, most universities provide limited jobs for students who need economic help. They also help students search for jobs in the community. I have been touched to see some students are so worn out from their jobs that they doze in my classroom. In addition to taking part-time jobs, students are also expected to take part in various social and sporting activities and, in fact, those who do not take part in are often looked down upon by their peers.

A number of American university students are married with families, or are single parents. These students are faced with the additional burden of raising a family. They have to spend much time, money and energy caring for their children and family. Most American university professors are strict. They test students on every unit in their course, in addition to mid-term and final exams in each semester. A lack of preparation by students may result in their failure. This means the loss of a lot of money and possibly future employment opportunities for these students. For this reason, many American students will study or stay up all night before an exam, in an effort to pass.

In contrast, Chinese students have a much easier time, because most Chinese parents pay for their kids’ tertiary education. Moreover, Chinese students do not need to worry about raising children or maintaining a family. So, Chinese students have no reason for not studying hard and achieving good marks.

小题1:Which of the following is not the difficulty American students have to face?

A．They have to work hard to pay for the high tuition fee.

B．Many American students have a burden of a family.

C．They need a better education to get a best job.

D．They have to pass strict tests to complete their education.小题2: Which of the following statement is NOT TRUE according to the passage?

A．American students have no time to think of physical exercise.

B．Sporting activities are popular among American students.

C．American students should take part in various social activities.

D．Those who don’t participate in social and sporting activities are usually unpopular with their peers.小题3:Compared with American students, Chinese university students __________.

A．have no difficulty in raising a family

B．live an easy life in universities

C．don’t have to take full-time jobs

D．have more duty to make greater progress小题4:This passage mainly deals with __________.

A．part-time jobs chosen by American students

B．the high fees of American universities

C．difficult lives American students have to face

D．different opinions on American universities

2009年以来，在灾后恢复重建和扩大内需的各项政策措施的作用下，四川交通运输业投资呈现出快速增长的发展势头。1～4月，全省交通运输业投资255.74亿元，同比增长131.3%，增速较同期全社会投资快52.4个百分点，迎来了高速发展时期。
进入2009年后，全省交通运输业投资就一直保持高速增长，2月完成投资73.25亿，增长87.54%；一季度完成投资169.2亿元，增长130.93%；到4月投资达255.74亿元，同比增长131.3%，较2008年全年高出78.1个百分点。随着总量的提升和增长速度的不断加快，全省交通运输业投资占全社会投资的比重也不断上升，1～4月份占全社会投资比重达到8%，创造新高。

2009年4月，四川全省交通运输业投资额为( )。

A．73.25亿元
B．86.54亿元
C．95.95亿元
D．95.96亿元

距离宽度不足4米的窄路50米以内的路段不能停车。