Comprehension 理解
Answer these questions:
1 What kind of piped water could be dangerous to the health?
2 Why does the author recommend that travellers on short trips should drink canned drinks of well-known brand names?
3 Why could ice in drinks be dangerous to the health?
4 Why wouldn't you be safe if you added 95 proof alcohol to contaminated water?
5 What kind of tap water is generally safe to drink in the absence of other sources?
Vocabulary 词汇
Refer to the text to see how the following words have been used, then write sentences of your own using these words: poor 1.1); contamination(1.2); regarded (1.4); areas (1.5); plants (1.7); in your presence (1.8); supply (1.10); on request (1.10); refuse (1.12); remote (1.21); various (1.22).
Summary 摘要
Refer to lines 1-5(‘Contamination…adding ice to them,’). In not more than 80 words write seven sentences giving advice to travellers about drinking water. Begin each sentence with the word‘always’. The first sentence has been done for you:
Always avoid intermittent tap-water supplies.
Composition 作文
A A foreigner is going to travel to some of the remote regions of your country. Write some notes giving him/ her good advice under each of these headings: the people, accommodation, food, water.
B Refer to your notes and write four paragraphs of advice to a traveller in about 400 words.
Key structures 关键句型
A Compare these active and passive uses of should for giving direct and indirect advice:
You should regard intermittent tap-water supplies as particularly suspect.
Intermittent tap-water supplies should be regarded as particularly suspect. (1.4)
Turn these sentences into the passive in order to give indirect advice:
1 You should avoid drinking tap-water.
2 You should prefer well-known brand names of bottled drinks.
3 They should open all bottles in your presence.
4 You should request boiled water in hotels.
5 You should boil water before drinking it.
B Compare these active and passive uses of shouldn't for giving direct and indirect advice:
You shouldn't regard intermittent tap-water supplies as sate.
Intermittent tap-water supplies shouldn't be regarded as safe.
Turn these sentences into the passive in order to give indirect advice.
1 You shouldn't drink tap-water．
2 You shouldn't accept bottles of water that haven't been opened in your presence.
3 You shouldn't put ice in drinks.
4 You shouldn't rely on alcohol to sterilize water.
5 You shouldn't add methylated alcohol to drinking water.
Special difficulties 难点
A Compare the -ing form in these four sentences:
Boiling is always a good way of treating water. (1.10) (boiling-noun)
Portable boiling elements that can boil small quantities of water…(1.11) (boiling-compound noun: i.e. elements used for boiling)
I was scalded with boiling water. (boiling-adjective: i.e. water which was boiling)The water is boiling. (boiling-participle: part of the verb form)
Identify the -ing forms as nouns, adjectives or participles in these sentences:
1 Travellers should avoid drinking tap water. (11.5-6)
2 International standards of water treatment are usually followed at bottling plants. (1.7)
3 Methylated alcohol should never be added to drinking water. (11.18-19)
4 Those planning a trip to remote areas should know about various methods… (11.21-22)
5 Making water safe to drink is a matter of life or death.
6 We are planning a trip to the remote areas of the country.
B Compare the -ed form in these two sentences:
Piped water supply is safe at its source. (1.3) (piped-adjectival participle)
The water has been piped across thousands of miles.(piped-past participle: part of the verb form)
Identify the -ed forms as adjectives or past participles in these sentences:
1 Some water supplies should be regarded as particularly suspect.
2 Bottled or canned drinks are usually safe. (11.6-7)
3 Carbonated drinks are acidic. (1.8)
4 Make sure that all bottles are opened in your presence. (11.8-9)
5 Drinks can be cooled by placing them on ice. (1.15)
6 Spirits labelled 95 proof contain only about 47 per cent alcohol. (11.17-18)
Multiple choice questions 多项选择题
Choose the correct answers to the following questions.
Comprehension 理解
1 Piped water could be contaminated, especially if ____.
a．it is supplied from the sewage system
b．it isn't safe by the time it reaches the tap
c．doesn't flow continuously through the pipes
d．it comes from farmland
2 Make sure that bottled drinks are opened in your presence, presumably ____.
a．to be assured that it was filled at a bottling plant
b．to make sure that it isn't too acidic to drink
c．to check that the rim of the bottle is clean and dry
d．because water supplies are uncertain
3 You should avoid ice in drinks because ____.
a．you don't know if it has been made with contaminated water
b．you can be sure it hasn't been boiled first
c．because it always comes from an unknown source
d．it hasn't been treated in your presence
4 You can't use alcoholic drinks to sterilize water because ____.
a．only ethanol is capable of doing this
b．the alcoholic content is rarely sufficiently concentrated to do the job
c．methylated alcohol is very poisonous
d．it's not a very good disinfectant
Structure 句型
5 Piped water____ safe at its source,____ it isn't always safe. (1.3)
a．must be…and
b．may be…but
c．should be…though
d．will be…even if
6 It____ to drink tap water of uncertain quality. (1.5)
a．isn't advisable
b．is advisable
c．isn't required
d．is required
7 Drinks can be cooled ____ them on ice. (1.15)
a．so as to place
b．in placing
c．if you place
d．to place
8 ____ rely on alcohol to sterilize water. (1.16)
a．Not
b．Don't
c．Must not
d．Not to
Vocabulary 词汇
9 Make sure that all bottles are opened ____. (1.8)
a．at once
b．now
c．at present
d．in front of you
10 ____ any cold drink from an unknown source. (1.12)
a．Discard
b．Prevent
c．Deny
d．Don't accept
11 You should not ____on alcohol to sterilize water. (1.16)
a．depend
b．insist
c．lean
d．support
12 Those planning a trip to____ places…(1.21)
a．away
b．far away
c．contaminated
d．overseas