心理现象的产生方式是（）。 A．精神活动 B．反射活动 C．意识活动 D．技能活动

阅读理解。

     My friend has a big police dog named Kim. Police dogs are often very smart. Every Sunday afternoon my

friend takes Kim for a long walk in the park. Kim likes walking very much.

     One Sunday afternoon a man visited my friend.

     He talked to my friend for a long time. They talked and talked. Soon it was time for my friend to take Kim

for his walk, but the man still stayed. Kim became very worried about his walk in the park. He walked around

the living-room sometimes and at last sat down in front of the man and looked at him. But the man went on

talking.

     After thirty minutes, Kim couldn't stand (忍受) it. He went out of the room and came back a few minutes

later. He sat down in front of the man again but this time he held the man's hat in his mouth.

1. The story is about ______.

A. dogs

B. cats

C. people

D. a police dog

2. What is the dog like?

A. Smart.

B. Dangerous.

C. Big.

D. Easygoing.

3. Where do they go for a walk?

A. In the park.

B. Outside the house.

C. Behind the park.

D. In the living-room.

4. When do they go for a walk?

A. On Mondays.

B. On Saturdays.

C. On weekends.

D. Every Sunday afternoon.

5. Which of the following is TRUE (正确的)?

A. The man knew Kim wanted to go out for a walk.

B. Kim doesn't like walking with my friend.

C. The man thought Kim was dangerous.

D. Kim sat down in front of the man because he asked him to leave.

—Could you please tell me ________?

—Of course. Many people in Shiyan know it.

A．where is Mount Wudang

B．how can I get to Wulong River

C．what is Shenlongjia famous for

D．if there will be a new airport in Shiyan

在做“探究力的平行四边形定则”实验时，橡皮条的一端固定在木板上，用两个弹簧秤把橡皮条另一端拉到某一位置O点，以下操作不正确的是[ ]

A．同一次实验过程中，O点位置应保持不变

B．实验中，弹簧秤必须保持与木板平行，读数时视线要正对弹簧秤刻度

C．实验中，先将其中一个弹簧秤沿一个方向拉到最大量程，然后只需调节另一弹簧秤的大小和方向，把橡皮条另一端拉到O点

D．实验中，把橡皮条的另一端拉到O点时，两个弹簧秤之间的夹角可取任意值，不一定取90°

生理盐水是溶质质量分数约为0.9%的氯化钠溶液，现有100g生理盐水给某病人输液，进入病人体内的氯化钠的质量是多少克？

电信企业的长途传输线路设备等成本的变化体现为一种“阶梯式”递增成本，这种成本也被称为( )。

A．半变动成本

B．半固定成本

C．混合成本

D．固定成本

E．变动成本