首页
登录
职称英语
[img]2012q1/ct_etoefm_etoeflistz_0828_20121[/img] [br] What does the man mean wh
[img]2012q1/ct_etoefm_etoeflistz_0828_20121[/img] [br] What does the man mean wh
游客
2025-02-07
14
管理
问题
[br] What does the man mean when he says this:
[Professor (female)] Q7 Class, I have a question for you. What’s a sugar bush?
[Student A (male)] A sugar bush? isn’t that a species of bush that you can get, um, sugar water out
of? For making syrup?
[Student B (male)] No, no...it’s not a bush. A sugar bush is a, a grove of maple trees, and those trees
are used to produce the maple syrup.
[Professor] You got it. Q6 And that’s what I want to talk to you about today: maple syrup
production. Now, some of you are probably really familiar with the process.
Especially if you’re from somewhere like Quebec or Vermont...or anywhere
else in northeastern North America. ’Cause that’s a center for maple syrup
production. Canada makes the vast majority of the world’s maple syrup: 80%.
Vermont is the largest producer in the United States, followed by Maine and
New York. But even if you don’t live in the Northeast, you still might’ve had
the opportunity to see maple syrup being made, because it can basically be
produced wherever maple trees grow.
[Student A] But are some types of maple trees better for making syrup than others? There
are lots of types of maple trees, aren’t there?
[Professor] Yes. That’s a good point. Most of the time, maple syrup is made from sugar
maples or black maples--since their sap has a pretty high sugar content. About
2%. Sap--you know what that is, right? It’s the fluid that runs through the
vascular system of plants. It’s a mixture of sugar, water, salts, and minerals. And
it’s the raw form of maple syrup.
So how does the process work? Well, maple syrup production usually happens
in early spring.This could be February, March, or April, depending on the region
and the weather conditions. Q9(A) Basically, you need to have nights where
the temperature drops to below freezing and then days that are pretty warm.
Conditions like these cause the sap in maple trees to start running. When the
temperature drops below freezing, water gets taken in from the soil.Then when
the temperature rises above freezing, the sap starts to flow. So when maple
syrup producers drill a hole in the trunk of a maple tree, the sap will run right
out of it. It usually flows for a period of about, um, 4 to 6 weeks.
I already mentioned which species of maple trees are best to tap, but there’re
other considerations as well. Experts look for trees that are, um, out in the open.
Trees that don’t have to deal with a lot of competition from other trees nearby.
These kinds of trees produce a lot more sap than trees that grow in crowded
forests. Um, for example, 15 to 20 gallons of sap in a season compared to just
10 gallons a season for forest-grown trees.
Once the trees have been selected, there’s some setting up that has to be done.
Q8 It really only takes some basic equipment like Q8(A) a bucket for collecting
the sap and Q8(B) a spout for directing it as it runs out of the tree. Of course,
larger operations use more sophisticated equipment like, um, plastic tubing
and pipelines to make the process more efficient. But the basic idea doesn’t
change.You drill a hole in the trunk of the tree, insert the spout, and position the
container to collect the sap as it runs out. Oh, and if you’re doing this year after
year, it’s important to remember that you have to drill a new hole every time...
cause each hole is good for just one year.
[Student A] Q10 But didn’t you say that the tree sap is only 20% sugar?
I don’t know how much sugar is in maple syrup, but I know it’s more than that!
How do you turn sap into syrup?
[Professor] Well, after collecting the sap, you have to process it to get the-product we’d
recognize as maple syrup. And this is pretty simple too. All you do is boil the
sap down for a long time until it gets really concentrated.
[Student B] Hmm...so it sounds like you end up with a smaller amount of syrup than you
had of sap, right?
[Professor] Yes. Q11 Actually, it takes forty gallons of sap to make just one
gallon of syrup, if you can believe that.
[Student B] [in disbelief] Forty gallons?
[Professor] Uh-huh. Well, it depends to some extent on the sugar content of the sap
you start with. It can vary between about 20 and 60 gallons. Q9(D) And...this
processing of maple syrup, it usually takes place in a special building called a
sugar house. See, since so much steam is produced while the sap boils down,
processing it anywhere else could cause damage to the walls of the structure.
Sugar houses are designed to deal with and vent all that steam. When the sap
boils down to a concentration of about 66% to 67% sugar, you’re done. All you
do then is filter it, and then it’s ready for use on pancakes and waffles.
选项
A、He wants to change the topic of the talk.
B、He wants the professor to elaborate on a point in the lecture.
C、He is trying to remember something the professor already said.
D、He wants to correct some mistakes that the professor made.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3947224.html
相关试题推荐
NarratorListentoalectureintheliteratureclass.[img]2011q1/ct_etoefm_
NarratorListentoalectureintheliteratureclass.[img]2011q1/ct_etoefm_
NarratorListentoalectureintheliteratureclass.[img]2011q1/ct_etoefm_
NarratorListentoalectureintheliteratureclass.[img]2011q1/ct_etoefm_
NarratorListentoalectureintheliteratureclass.[img]2011q1/ct_etoefm_
NarratorListentothelectureinbusinessclass[img]2011q1/ct_etoefm_etoef
NarratorListentothelectureinbusinessclass[img]2011q1/ct_etoefm_etoef
NarratorListentothelectureinbusinessclass[img]2011q1/ct_etoefm_etoef
BiologyCardiacMuscle[img]2012q1/ct_etoefm_etoeflistz_0107_20121[/img][br]Wha
BiologyCardiacMuscle[img]2012q1/ct_etoefm_etoeflistz_0107_20121[/img][br]Bas
随机试题
[originaltext]ProfessorsfromYaleUniversityagreedinapaneldiscussion
[originaltext]SonyandBertelsmannAGhaveagreedtocombinetheirmusicun
白血病细胞胞体较大,不规则,核常呈不规则,扭曲,折叠,呈S型,染色质疏松,核仁可
勘察阶段监理工程师对勘察现场作业的质量控制,应重点检查的内容包括()。A.勘
关于意识障碍,下列叙述不正确的是A.包含觉醒状态异常 B.病理学基础为大脑皮质
某女,52岁。患痹证多年,症见肢体关节疼痛,入夜尤甚,关节屈伸不利。麻木拘挛。宜
其他条件一定时,财政结余使货币供应量()。A:增加 B:不变 C:减少 D
(2018年真题)根据民事法律制度的规定,下列各项中,属于民事法律行为中的处分行
编制单位设备及安装工程概算时,当初步设计深度不够,设备清单不完备,只有主体设备或
中国居民平衡膳食宝塔中提出的食品数量与当前大多数人的实际摄人量还有较大距离的是(
最新回复
(
0
)