首页
登录
职称英语
It is hard to track the blue whale, the ocean’s largest creature which has a
It is hard to track the blue whale, the ocean’s largest creature which has a
游客
2023-07-29
60
管理
问题
It is hard to track the blue whale, the ocean’s largest creature which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and 【S1】______ sightings are too unreliable to give real 【S2】______ into its behavior.
So biologists were delighted early this year when with the help of the Navy, they were able to 【S3】______ a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy’s formerly top-secret system of under water listening devices spanning the oceans. Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly 【S4】______ its global network of underwater listening system built over the decades to track the ships of 【S5】______ enemies.
Earth scientists announced at a news conference recently that they had used the system for closely 【S6】______ a deep-sea volcanic eruption (爆发) for the first time.
The speed of sound in water is 【S7】______ one mile a second—slower than through land but faster than through air. What is most important, different 【S8】______ of ocean water can act as channels for sounds, focusing them in the same way a stethoscope (听诊器) does when it 【S9】______ faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reason that even 【S10】______ weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
A) layers B) roughly C) observation D) monitoring
E) visual F) uncover G) discover H) carries
I) relatively J) visible K) insight L) examining
M) potential N) considerably O) track [br] 【S7】
选项
答案
B
解析
从结构上判断应选一个副词,来修饰后面的数词,三个副词中表示“大约,大概”的只有roughly,故B为正确答案。
转载请注明原文地址:http://tihaiku.com/zcyy/2879109.html
相关试题推荐
RussiaisthelargesteconomicpowerthatisnotamemberoftheWorldTradeOrg
RussiaisthelargesteconomicpowerthatisnotamemberoftheWorldTradeOrg
RussiaisthelargesteconomicpowerthatisnotamemberoftheWorldTradeOrg
RussiaisthelargesteconomicpowerthatisnotamemberoftheWorldTradeOrg
RussiaisthelargesteconomicpowerthatisnotamemberoftheWorldTradeOrg
RussiaisthelargesteconomicpowerthatisnotamemberoftheWorldTradeOrg
Itishardtotrackthebluewhale,theocean’slargestcreaturewhichhasa
Itishardtotrackthebluewhale,theocean’slargestcreaturewhichhasa
Itishardtotrackthebluewhale,theocean’slargestcreaturewhichhasa
Itishardtotrackthebluewhale,theocean’slargestcreaturewhichhasa
随机试题
RecruitmentProcessOutsourcing—betterknownasRPO—hasgainedsignificantm
Inanattempttoimprovetheoverallperformanceofclericalworkers,manyc
Thispassageexploreshowwildfiresarebornandlive.[br]Therearethreecomp
Duringthe1980s,unemployment(失业人数)andunderemployment(不充分就业)insomecountr
M国的人均收入数据如表19-3所示 计算该国1870-1929年人均收入增
对缺氧和二氧化碳潴留同时并存者应:A.高浓度给氧为宜 B.大流量给氧为宜 C
从所给四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
酶免疫组织化学技术最常用的酶是A.碱性磷酸酶B.辣根过氧化物酶C.葡萄糖氧化酶D
企业的经营风险主要体现在()。A.业务性质改变 B.财务报表造假 C.
A.精神分裂症预后较好的有关因素 B.精神分裂症预后较差的有关因素 C.阻止
最新回复
(
0
)