我国各民族的分布特点是() A.东南多、西北少 B.均匀分布 C.大散居,小聚居

题型:选择题

问题:

我国各民族的分布特点是( )

A.东南多、西北少

B.均匀分布

C.大散居,小聚居

D.小散居,大聚居

考点:中国的民族
题型:选择题

C

Life is like the four seasons. Now I am very old, but when I was young, it was the spring of my life. After I was born, I played a lot, and then I started school. I learned many new things. Like a flower, I grew bigger every day. There were happy days and sorrowful days: some days the sun shone, and some days it didn’t.

In my twenties, I had a good job. I was strong and happy. Then I married and had a child. In those days, I didn’t have much time to think. Every day I was busy and worked very hard. And so, I started to get some white hairs. The summer of my life passed quickly.

Then the days got shorter. Leaves fell from the trees. My child was a university student, and then an engineer. My home was much quieter. I started walking more slowly. One day I stopped working. I had more time. I understood this was my autumn, a beautiful time when the trees change color and give us delicious fruits.

But the days kept getting shorter and colder. Winter has come. I am older and weaker. I know I do not have many days left, but I will enjoy them to the end.

小题1:The writer started walking more slowly in the _______ of his life.

A.spring

B.summer

C.autumn

D.winter小题2:According to the passage, which of the following ages is during the summer of his life?

A.15.

B.33.

C.62.

D.87.小题3:What does the word “sorrowful” in the first part mean in this passage?

A.Sad.

B.Exciting.

C.Wonderful.

D.Pleasant.小题4:The best title of the passage can be _______.

A.Four Seasons

B.My Life

C.Four Seasons in a Year

D.Four Seasons in My Life

题型:选择题

一人用200牛顿的力竖直向上提起一个重140牛顿的木箱,木箱受到的合力是______牛顿,方向为竖直______.

题型:选择题

如图(甲)所示,A、B两物体叠放在一起,放在光滑的水平地面上,从静止开始受到一变力的作用,该力与时间的关系如图(乙)所示,运动过程中两物体始终保持相对静止,则下列说法正确的是(  )

A.t=0时刻和t=2t0时刻,A受到的静摩擦力相同

B.在t0时刻,A、B间的静摩擦力最大

C.在t0时刻,A、B的速度最大

D.在2t0时刻,A、B的速度最大

题型:选择题

低体温是指()

A.T<36℃

B.T<35℃

C.T≤35℃

D.T<34℃

E.T≤34℃

题型:选择题

颌骨骨髓炎临床上通常是______感染

A.金黄色葡萄球菌
B.溶血性链球菌
C.肺炎球菌
D.大肠杆菌
E.混合性细菌

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