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What are weather balloons（氣球）？
    Weather balloons are one of the useful ways to study weather.They are made of latex（乳膠） or a kind of rubber.They are full of hydrogen （氫氣） or helium （氦氣）.
    Every day，scientists fly about 1，000 weather balloons into the sky from more than 900 places around the world.These balloons go as far as 200 kilometers.They fly as high as 35 km.This is much higher than planes because the planes only fly as high as 7 to 12 kilometers.
    How do weather balloons work？
    A weather balloon carries a radiosonde （無線電探空儀） and a parachute（降落傘）.The radiosonde can measure（測量） things like temperature，humidity （濕度） and wind in the air.It can stand（忍受） temperatures as cold as 95 degrees（度） below zero.It is powered（供電） by a small battery（電池）.The balloons then get data（數(shù)據(jù)） to help scientists make weather forecasts （預(yù)報）.It sends data back to the ground every one to two seconds（秒）.The balloon flies for about two hours.As it goes up，it gets thinner and thinner.Pop!It bursts（爆裂）!With the help of the parachute，the radiosonde falls slowly to the ground.
    What do you do if you pick up a radiosonde？
    There are instructions（指示） inside each radiosonde.They tell you how to give it back to a weather station.

根據(jù)上面短文內(nèi)容填空，每空一詞。

Something about （1）
weather
weather
balloons
What are they？ ★People（2）
use
use
them to study weather.
★They are made of latex（乳膠）or a kind of rubber.
★They are（3）
full
full
of hydrogen or helium.
★From（4）
more than
more than
900 places around the world，scientists fly about 1，000 weather balloons into the sky.
★They can fly 200 kilometers in distance（距離）and fly as （5）
high
high
as 35 km in the sky.
How do they（6）
work
work
？		 ★They measure things like temperature，humidity and（7）
wind
wind
in the air.
★Scientists make weather forecasts （8）
get
get
data from the balloons.
★When they burst，the parachute can （9）
help
help
the radiosonde to fall slowly to the ground.
What do you do？ ★Each radiosonde （10）
has
has
instructions inside.They tell you how to give it back to a weather station.
【考點】說明文；科普知識．
【答案】weather；use；full；more than；high；work；wind；get；help；has
【解答】
【點評】
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發(fā)布：2024/7/17 8:0:9組卷：4引用：1難度：0.5
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