题目内容
| Now, look at the pictures and fill in the blanks. |
| (1)Isabel is smart. | |
| (2)My sister is __________. | |
| (3)The baby is __________. | |
| (4)John is __________. | |
| (5)The monster is __________. | |
| (6)The beach is __________. |
| (2)interesting (3)cute (4)friendly (5)scary (6)beautiful |
Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity is high. But if the bottom is heavier, it won’t fall easily. Then we say that its center of gravity is low.
Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).
Now look at the second picture. There is some heavy iron in the bottom of this box. It will not fall, because its center of gravity is above its bottom.![]()
【小题1】If the bottom of an object is ______ its top, it will fall over easily.
| A.lighter than | B.heavier than | C.no heavier than | D.as heavy as |
【小题3】The main idea of the passage is _________.
| A.why things fall over | B.a low center of gravity |
| C.a high center of gravity | D.that everything has weight |
There is an old tiger in the forest (森林). He doesn’t want to look for (寻找) food now. He often lets other animals get him some food to eat.
One day, he sees a monkey and says, “I am hungry, monkey. Go and get me something to eat.” “I can’t do that now, tiger,” the monkey says, “There is another tiger over there. He does not let me get anything for you to eat. I am afraid of (害怕) him.” “What?” says the old tiger. “Take me to that tiger. I want to talk to him.” The monkey and the tiger go to the bridge over the river (河). “Now look down at the water.” says the monkey. “Do you see the tiger?” “Yes, I do,” says the old tiger. “Let me eat him.” Then the tiger jumps (跳) into the river.
A. in the zoo B. in the garden
C. in the forest D. in the park
【小题1】How many tigers and monkeys are there in the story?
| A.Two tigers and two monkeys. |
| B.Two tigers and one monkey. |
| C.One tiger and two monkeys. |
| D.One tiger and one monkey. |
| A.Because they are afraid of him. |
| B.Because only they can find some food. |
| C.Because they are his friends. |
| D.Because they like to do that. |
| A.goes to get something to eat |
| B.goes to the bridge with the tiger |
| C.knows there is another tiger |
| D.tells the tiger to jump into the water |
| A.The tiger is very clever. |
| B.The monkey eats the tiger. |
| C.The tiger eats another tiger. |
| D.The tiger jumps into the water. |