首页
登录
职称英语
[originaltext]W: Hi, Tom!M: Judy. I haven’t seen you in weeks. Where have you
[originaltext]W: Hi, Tom!M: Judy. I haven’t seen you in weeks. Where have you
游客
2024-06-04
18
管理
问题
W: Hi, Tom!
M: Judy. I haven’t seen you in weeks. Where have you been?
W: In Florida.
M: What vacationing! While the rest of us studying on the campus in February cold?
W: Not exactly. I spent most of my time under water.
M: I don’t understand.
W: I was on a special field trip. I went with my marine biology class.
M: So you went scuba diving. What were you looking for? Sunken treasure?
W: You might say so. The sea’s full of treasures. All kinds of strange fascinating organisms. Our class concentrated on studying plankton.
M: I found plankton were too small to be seen.
W: That’s a common misconception. The term plankton covers a wild variety of freely flowing plants and animals, from microscopic one cell organisms to larger ones, such as the common jellyfish.
M: Jellyfish may be large enough to be seen. But they are transparent, aren’t they?
W: Yes, most planktons have transparent tissues as protected camouflage, it makes them practically invisible to predators.
M: But not invisible to your biology class, I hope.
W: By concentrating, I was able to see the outlines of lots of different plankton plants and animals. In fact, our professor even took photographs of gastropods, which are small oceanic snails.
M: How would the snails show up in the photographs of their transparence?
W: We scoured it with harmless green dye since particles of the dyes stuck to their tissues, the snails appeared in green outline in the photographs.
M: That sounds like an interesting trip. But I think if I’d been in Florida in February, I’d much rather spend my time just swimming and lying in the sun.
选项
A、Planktons are too small to be seen.
B、Most planktons have transparent tissues.
C、Most planktons are practically invisible to predators.
D、Planktons are fascinating organisms.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3618956.html
相关试题推荐
[originaltext]Formanyinternationalstudents,comingtotheUnitedStates
[originaltext]Formanyinternationalstudents,comingtotheUnitedStates
[originaltext]M:Therearejustoneortwomorethings,Catherine.W:Docallm
[originaltext]M:Therearejustoneortwomorethings,Catherine.W:Docallm
[originaltext]Whydowecry?Canyouimaginelifewithouttears?Noton
[originaltext]Whydowecry?Canyouimaginelifewithouttears?Noton
[originaltext]Hiddenpassengerstravelinginships,trains,orevencarsca
[originaltext]Hiddenpassengerstravelinginships,trains,orevencarsca
[originaltext]ThesilenceoftheReferenceLibrarywasbrokenonlybyanoc
[originaltext]ThesilenceoftheReferenceLibrarywasbrokenonlybyanoc
随机试题
[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_006[/audioFiles]
[originaltext]W:Sam,couldyoureviewtheresultsofthesurveyonleisurespo
如图所示的刚架,各杆EI相同,C点竖向位移(向下为正)等于( )。
某工程施工至某月底,经偏差分析得到费用偏差(CV)<0,进度偏差(SV)<0,则
所有级别的公路安全护栏小车(1.5t)碰撞速度为()。A.80km/h B.9
糖酵解过程中催化1mol六碳糖裂解为2mol三碳糖第一步反应的酶是A.磷酸己糖异
存在于肝细胞微粒体中的是 A.25-羟维生素D3-1α-羟化酶B.维生素D3-
我国西部大部分省区特别是()地区水土流失严重,土地荒漠化加快,是自然生态最脆
(2020年真题)下列各项因素中,可能表明注册会计师需要确定特定类别交易、账户余
下列有关企业保留被转移资产控制权的说法,不正确的是()。A.企业在判断是否
最新回复
(
0
)