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【题目】我国四大高原中,地形崎岖,石灰岩发布广泛,大小不等的山间盆地和河谷平原错落其中,这个高原是( )
A.黄土高原 B.云贵高原 C.青藏高原 D.内蒙古高原
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【题目】在测量小灯泡电功率的实验中,因缺少电压表,小军利用两个电流表和一个已知阻值为10Ω的电阻R0, 同样测出了小灯泡的电功率,原理如图所示.小军读出电流表A1的示数为0.5A,而电流表A2的示数为0.2A,则小灯泡L两端的电压为________ V,小灯泡的实际功率为________ W.
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【题目】读等高线地形图,完成下列要求
(1)写出图中字母代表的相应地形部位的名称:
C:;
D:;
E:。
(2)虚线A,F中,表示山脊的是。
(3)在等高线地形图上,坡陡的地方,等高线(选填“密集”或“稀疏”);坡缓的地方,等高线(选填“密集”或“稀疏”)。
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【题目】“我住江之头,君住江之尾…山山皆向北,条条南流水”,描述的地理特征是( )
A. 九曲回肠,林海雪原 B. 大江东去,千沟万壑
C. 水流平缓,一望无际 D. 山河相间,纵列分布
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【题目】读下图,回答下列问题。
(1)甲、乙两图中,表示北半球的是图。
(2)纬线圈的长度随纬度的升高而。
(3)在北极上空看,地球呈(填“顺”或“逆”)时针方向自转。
(4)图中A点位于B点的方向。
(5)图中A,B,C,D四点自南向北排列依次为。
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【题目】
What's the most important thing for you to have in your life? Somebody mentions hard work; others suggest knowledge, love and luck.
If you arrange(排列)the 26 English letters in order and use numbers to represent each of them, for example, 1 for a, 2 for b, 3 for c. . . 26 for z, you can change an English word into a number. So hard work becomes 8+1+18+4+23+15+18+11=98,meaning 98 is its mark; knowledge: 11+14+15+23+12+5+4+7+5=96;love:12+15+22+5=54, and luck: 12+21+3+11=47,a small mark. None of these words can give one a full mark. What about money? It can't, either.
Then what else? Don't be worried. You can always find an answer to a problem in your life, when you change your way of looking at things or doing things, or your attitude. Yes, attitude is the word. See for yourself : attitude:1+20+20+9+20+21+4+5=100,a full mark.
Different attitudes lead to different courses of life. Most time people hope for a better life. It is possible that they will have a better life if they change their attitudes. When you change your manner and became friendly toward others, you'll meet more smiling faces toward you. In the same way, if you take a positive attitude toward failure, you'll find it's also rewarding(有益的)though it has caused you losses(损失).
【1】The writer thinks is the most important thing in a person's life.
A. hard workB. knowledge
C. moneyD. attitude
【2】What is the mark of the word. "money" according to the passage?
A. 73.B. 72.C. 75.D. 62.
【3】From the passage we can learn that .
A. different attitudes come from different courses of life
B. sometimes failure can bring you good if you take a positive attitude
C. math can solve every problem easily in our daily life
D. none of the English words except "attitude" is 100 or more
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【题目】
The rockets take astronauts and man-made satellites into space. The satellites are used for communication, weather monitoring and research. But how do satellites stay up without Falling down?
There are two opposite forces acting on the satellite. One of them is the force of gravitation(地心引力), which tries to pull the satellite toward the earth. The other force is created by the rotation (旋转)of the satellite around the earth. This force tries to take the satellite away from the earth. With these two forces, the satellite goes round and round. The gravitational pull of the earth is like a rope which keeps the satellite from flying away.
Everything that goes up has to come down. It is only a matter of time before a satellite comes back to the earth. As time goes by, the satellite loses its speed, which makes the gravitational pull stronger than the force pulling it away. This makes the satellite crash (坠落)down to the earth.
【1】The force that pulls the satellite towards the earth is created by ________.
A. the earthB. the satellite itself
C. the rotation of the satelliteD. the rope
【2】Why can't the satellites fly away?
A. Because of the force from the earth.
B. Because the satellite is too big.
C. Because of the force created by the rotation of the satellite around the earth.
D. Because people on earth have made ropes to tie the satellites tightly.
【3】Which of the following is TRUE according to the passage?
A. There are four forces acting on the satellite.
B. The force of gravitation makes the satellite go round and round.
C. As time goes by, the satellite will finally fall down.
D. The satellite will stay in space forever.
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