甲乙两支施工队同时从两端往中间修一段长540米的公路，已知甲队的速度是乙队的1.

阅读理解。

    There are many advantages of becoming a professional musician. The biggest advantage is being able to

do something you love. You will have the chance to travel to many different places and meet a lot of different

people. That will open up your eyes.

    However, there are also disadvantages of being a professional musician. One of the biggest disadvantages

for most musicians is that they don't always have enough money. Most of the time, you will be looking for

jobs. Sometimes you won't be able to find a good job. Another disadvantage is the place you live in. If you

want to be a musician, you usually have to move to an area that has a lot of jobs, such as New York City.

The cost of living in these areas is usually very high. The third disadvantage is that you can't have a stable

family life. Different jobs will take a musician to different places, so most musicians are unable to have a

regular family.

1.The advantages of being a professional musician include all the following EXCEPT ______. [ ]

A.making a lot of money all the time

B.doing something you tike

C.meeting a lot of different people

D.traveling to many different places

2.Which is NOT a disadvantage of being a professional musician? [ ]

A.Not always having enough money.

B.Being unable to have a stable family life.

C.Having the chance to meet many different people.

D.Tile high cost of living in big cities.

3.What does the underlined word "stable" mean in Chinese? [ ]

A.幸福的

B.稳定的

C.健康的

D.坚定的

4.Which of the following is true according to the passage? [ ]

A.The biggest advantage of being a musician is being able to hive in big cities.

B.Most musicians are unable to have a regular family life because they enjoy traveling.

C.It's difficult for some musicians to find a good job sometimes.

D.The author doesn't want to be a musician at all.

5.The author mainly tells us ______ in the passage. [ ]

A.how to become a professional musician

B.why people want to become professional musicians

C.not to become professional musicians

D.becoming a professional musician can also have problems

（8分）2014年，济南力推12项创卫督导检查工作，冲刺国家卫生城市，要求城市道路机械化清扫率（含高压冲水）≥20%。如图所示是某型号的电动清洁车，其主要技术参数如下表。若在某次清扫工作中，该车在水平路面上匀速行驶15min通过的路程为4km。求：

（1）这段时间内清洁车的行驶速度是多大？

（2）该车前挡风玻璃采用一种新型的夹胶钢化玻璃，此种玻璃硬度较大。若测得玻璃长1.5m、宽1m、厚0.4cm，查得此种玻璃的密度是2.5×10³kg/m³ ，这块玻璃的质量是多大？

（3）满载的清洁车停在水平地面上，对地面的压力多大？（g取10N／kg）

（4）该清洁车轮胎承受的最大压强不能超过2.5×10⁵ Pa，那么满载时轮胎与地面的接触面

积最小是多少？

世界上最大的橡胶生产国是（　　）

A．菲律宾

B．马来西亚

C．泰国

D．印度尼西亚

下面既是病理产物，又是致病因素的是（）。

A.饮食

B.六淫

C.七情

D.瘀血

E.疫疠

下列哪些情形，用人单位应当向劳动者支付经济补偿？（）

A、因未及时足额支付劳动报酬，劳动者提出解除劳动合同的

B、因未依法为劳动者缴纳社会保险费，劳动者提出解除劳动合同的

C、劳动者不能胜任工作，经过培训或者调整工作岗位，仍不能胜任工作的，用人单位提出解除劳动合同的D、劳动合同期满，用人单位降低劳动合同约定条件续订合同，劳动者不同意续订，劳动合同终止的