They're orange，they're robots and they're capable of sailing the high seas without human intervention.
On Tuesday the National Oceanic and Atmospheric Administration（NOAA）launched a pair of Saildrones（海洋無人機(jī)）in Pacific Northwest waters for the first time.Their summer long sailing journey will stretch from Vancouver Island to California.The Saildrone operators will collect data to help set future fishing seasons.The government wants to see whether seagoing robots can extend fishery surveys now performed by expensive manned ships.
Nora Cohen from NOAA said，"The 23-foot long seagoing robots can follow a remotely programmed course for up to a year at a time.And they don't require any fuel.We use wind and solar power to drive the sensors." He added，"It means that we're able to go to places where we don't really want to send people，and go into weather that we really don't want anyone ever to be in，and be able to send measurements back."
The primary mission is to investigate the species and the number of fish in existence and the places where they are.Larry Hufnagle，scientist of NOAA Fisheries in Seattle，said a traditional big NOAA research ship-based survey costs around ＄25，000 per day.By comparison，one Saildrone costs ＄2，500 per day.
"It could be a significant saving，" Hufnagle said."But like anything else，there is a trade-off in what you get and what you don't get.On the manned ship，we have limited time.It takes a lot of people.We spend a fair amount of money.But there is one thing the Saildrone can't do that humans can：cast a net to catch and positively identify the fish detected below.The Saildrones are going to give us additional data，not replacement data."
Nora Cohen said Saildrone，a venture capital-backed company based in Alameda，California，expects to launch a total of 11 of its seagoing robots to survey different water bodies for NOAA this year.The Bering and Arctic seas，Coastal California and the Gulf of Mexico will be the locations of additional missions.
（1）What is the purpose of collecting fish data？ BB
A．To explore the ocean.
B．To assist fishing industry.
C．To learn the habits of fish.
D．To improve fishing skills.
（2）What is mainly discussed about the Saildrone in Paragraph 3？ AA
A．Its advantages.
B．Its appearance.
C．Its power systems.
D．Its primary mission.
（3）What does the underlined word "trade-off" in Paragraph 5 probably mean？ DD
A．Debate.
B．Reason.
C．Reality.
D．Balance.
（4）What can be inferred from the text？ AA
A．The Saildrone has a promising future.
B．Hufnagle thinks little of the Saildrone.
C．Manned ships will be completely replaced.
D．Production of seagoing robots is restricted.
【答案】B；A；D；A
【解答】
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發(fā)布：2024/5/23 20:38:36組卷：10引用：1難度：0.5
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