如图,向一只重力和体积均不计的薄塑料袋内装入大半袋水,用弹簧测力计测出它的重力为

题型:填空题

问题:

如图,向一只重力和体积均不计的薄塑料袋内装入大半袋水,用弹簧测力计测出它的重力为2.8N(如图甲).将其逐渐浸入水中的过程中,弹簧测力计示数逐渐     (选填“变大”、“变小”或“不变”).当袋中的水面与容器中的水面相平时(如图乙),弹簧测力计的读数为    N,这时该盛水的塑料袋排开水的重力为    N.

考点:浮力产生的原因
题型:填空题
Early one morning, an old woman was carrying a big basket of potatoes on her head to the market. She hoped to        them to the people from town.
The mountain road was narrow (窄的) and the old woman was walking      , because she did not want to have       and lose her potatoes.
Suddenly she        a loud bell, and a bicycle came round the corner.
It passed her and went very fast       the hill. The old woman had to jump to one side of the       so quickly that the basket of potatoes nearly fell into the valley (山谷).
She looked up and saw that a young boy was on the bicycle. He was        on without even      round to see whether the old woman was all right. The old woman began to shout, “Come back, young man! You dropped something!”
When he heard this, the boy stopped the bicycle so suddenly that he nearly fell off. Then he turned and began to        the bicycle back up to the hill. “What is it?” he asked, “What did I drop?”
“Little boy,” the old woman answered, “you dropped your        .”
小题1:
A.sendB.giveC.sellD.take
小题2:
A.carefulB.carefullyC.politelyD.quiet
小题3:
A.a matchB.a restC.an accidentD.a talk
小题4:
A.hitB.madeC.foundD.heard
小题5:
A.downB.upC.toD.over
小题6:
A.roadB.streetC.townD.hill
小题7:
A.drivingB.ridingC.runningD.walking
小题8:
A.sawB.watchedC.lookingD.found
小题9:
A.carryB.catchC.giveD.push
小题10:
A.fruitB.potatoesC.manners (礼貌)D.bicycles
题型:填空题

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题型:填空题

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题型:填空题

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