沥青混凝土路面的初压和终压可选用的压路机械有( )。A．关闭振动装置的振动压机B．

下图是实验室常用的实验装置，请回答下列问题。

⑴写出仪器①的名称          ；②            。

⑵实验室若用A装置制取氧气，发生反应的文字表达式为                    。若某同学用F装置收集一瓶较纯净氧气，当观察到              时开始收集。若用排空气法收集氧气，验满方法为              。G装置内装满水收集氧气时，还可用于测定氧气的体积，此时还需要       （填仪器名称），氧气由    （填“a”或“b”）进入G中。

⑶实验室制取二氧化碳，发生反应的文字表达式为                         ；若用装

置B制取CO₂和用C比，优点是                        ；若要制干燥二氧化碳，通

常在G中加入浓硫酸作干燥剂，则气体应从      口进入（填a或b，）。

⑷实验室常用碱石灰和硫酸铵两种固体混合加热的方法制取氨气。根据所学的知识判断，实验室制取氨气时发生装置       （填字母序号），收集氨气的装置只能是E而不用D或F，由此可知氨气具有的性质是                                    。

—How do you learn English so well?

—______ chatting with my uncle in America-online. [ ]

A. For

B. By

C. In

D. With

第三部分：阅读理解(共20小题；每小题2分，满分40分)

阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

My wife and I used to feel that it was impossible to be a true friend to someone whose name we didn’t know. How wrong we were! Years of Sunday-morning bus trips through the city with the same group of “nameless” people have changed our thinking.

Before the bus takes off, we all join in a conversation: where’s the silent woman who sits up front and never responds to our cheery greetings? Here she comes. Her worn clothing suggests she doesn’t have much money to spare, but she always takes an extra cup of coffee for the driver.

We get smiles from a Mexican couple as they get on the bus hand in hand. When they get off, they’re still holding hands. The woman was pregnant late last year, and one day her change of shape confirmed that she’d delivered the child. We even felt a little pride at the thought of our extended family.

For many months, our only sadness lay in our inability to establish the same friendship with the silent woman at the front of the bus. Then, one evening, we went to a fish restaurant. We were shown to a table alongside someone sitting alone. It was the woman from the bus.

We greeted her with friendly familiarity we’d shown all year, but this time her face softened, then a shy smile. When she spoke, the words escaped awkwardly from her lips. All at once we realized why she hadn’t spoken to us before. Talking was hard for her.

Over dinner; we learned the stay of a single mother with a disabled son who was receiving special care away from home. She missed him desperately, she explained.

“I love him… and he loves me, even though he doesn’t express it very well,” she murmured. “Lots of us have that problem, don’t we? We don’t say what we want to say, what we should be saying. And that’s not good enough.”

The candles flared on our tables. Our fish had never tasted better. But the atmosphere grew pleasant, and when we parted as friends—we shared names.

56.Which of the following might be the best title of this passage?

Friends of the Road               B. The Silent Woman on the Bus

C. Going to Work by Bus              D. Different Kinds of Friendship

57.All the following statements can describe the woman except ______.

A. poor         B. warm hearted          C. silent        D. cold

58. The underlined word “establish” in the fourth passage probably has the same meaning as ______.

A. keep         B. discover        C. set up         D. accept

59. Why did the woman usually keep silence while taking the bus?

A. She was worried about her disabled son.

B. She was sad to see the happy Mexican couple us a single mother.

C. She had difficulty in expressing herself.   D. She was only interested in the bus driver.

60. The woman had the same problem with her son in the way that ______.

A. they both disabled people   B. they both had some difficulty in expressing

C. they both liked bus travel   D. they both brought interest to the passengers

腰椎CT扫描专用腿垫的作用是（）

A.使受检者更舒适

B.使腰椎的生理弧度减小

C.使受检者腰部垫高

D.使腰椎的生理弧度增大

E.使受检者减轻疼痛