~ It takes … minutes for the poison to penetrate the skin.
| 15+
| 20
| 25
| 30
| 35
~ Persons who …contact with the plant may affected.
| come into+
| go to
| get for
| damage of
| depend on
~ It is necessary to … the poison quickly and thoroughly
| wash out+
| clean up
| get for
| damage of
| depend on
~ Some corrosive poisons destroy tissue by…it.
| oxidizing+
| poisoning
| evaporating
| washing
| depending
~ The toxic characteristics of poisoning are usually due to…substances.
| four +
| two
| three
| five
| six
~ Some plants … corrosive poisons.
| contain+
| damage
| affect
| intake
| loose
~ The human body is a system of chemical compounds.
| complex+
| simple
| poor
| single
| mutagenic
~ Life is dependent upon many … elements.
| different+
| simple
| poor
| single
| mutagenic
~ The body has many mechanisms to … its intake of materials.
| regulate+
| lead
| allow
| appear
| undergo
~ When … amount of elements occur in the body toxic reactions can be expected.
| an excessive+
| an important
| a simple
| a little
| a few
~ There is … limit to the amount of any compound which the body can accumulate.
| an upper+
| a lower
| a bigger
| a faster
| a slower
~ We usually … the term “toxic substance” to the chemicals.
| limit+
| increase
| raise
| inhibit
| reduce
~ Chemicals, presenting small amounts, … the biochemical functions of the body.
| affect+
| improve
| help
| enlarge
| increase
~ Lethal doses are milligrams weight of the subject
| mg of substance per kg+
| mg of substance per g
| kg per mg
| g per mg
| g per kg
~ CN is generally … to humans in doses of … of body weight
| fatal+
| alive
| good
| normal
| effective
~ Less toxic substances and the probable lethal doses for an average person is morphine.
| 1 mg per kg+
| 0.1 mg per kg
| 0.2 mg per kg
| 0.3 mg per kg
| 0.4 mg per kg
~ Less toxic substances and the probable lethal doses for an average person is aspirin
| 50-500 mg per kg+
| 20-200 mg per kg
| 30-300 mg per kg
| 40-400 mg per kg
| 10-100 mg per kg
~ Less toxic substances and the probable lethal doses for an average person is methyl alcohol
| 05-5 g per kg+
| 01-1g per kg
| 02-2 g per kg
| 03-331 g per kg
| 04-4 g per kg
~ Less toxic substances and the probable lethal doses for an average person is ethyl alcohol.
| 5-15 g per kg+
| 4-14 g per kg
| 3-13 g per kg
| 2-12 g per kg
| 1-11 g per kg
~ Toxic substances can be classified into several categories according to the … on the body
| effect+
| intake
| define
| regulate
| use
~ There is a … variety of ways on which toxic substances may act
| wide+
| narrow
| little
| few
| simple
~ Action of toxic substances can not be classified as …
| effective+
| corrosive
| metabolic
| neurotoxic
| mutagenic
~ There are … types of poisoning
| two+
| three
| four
| five
| six
~ … poisoning occurs when the dose is sufficient to cause moderate persistent symptoms
| chronic +
| acute
| moderate
| mild
| subacute
~ … poisoning caused by a large dose of toxic substance
| Acute+
| Chronic
| Moderate
| Mild
| Subacute
~ Toxic substances that react locally on tissue are … poisons.
| corrosive+
| metabolic
| carcinogenic
| mutagenic
| neutrogenic
~ Death results after intake of 1 ounce of concentrated sulphuric acid.
| 28,3gr.+
| 20,3gr.
| 18,3gr.
| 15,3gr.
| 10,8gr.
~ Hydrochloric acid are very dangerous … poisons.
| corrosive+
| mutagenic
| carcinogenic
| metabolic
| neurotoxic
~ Toxic substances first …cellular structures.
| dehydrate+
| hydrate
| oxidate
| nitrate
| denitrate
~ Put prepositions into the gaps:
I agree … playing darts.
| with+
| to
| on
| in
| up
~ Put prepositions into the gaps:
They apologize … being late.
| for+
| with
| upon
| to
| on
~ Put prepositions into the gaps:
She doesn't believe … getting lost in the wood.
| in+
| on
| above
| to
| under
~ Put prepositions into the gaps:
Do you concentrate … reading or writing?
| on+
| with
| upon
| to
| in
~ Put prepositions into the gaps:
I wanted to congratulate you … making such a good speech.
| on+
| with
| upon
| to
| in
~ Put prepositions into the gaps:
Success may depend … becoming more patient.
| on+
| above
| upon
| to
| in
~ Find the reported speech.
| She said she was teaching English online.+
| She said: “It's cold”.
| "I might go to the cinema", he said.
| She said: “What shall we learn today”?
| Her sister said, “I’ve been teaching English for seven years”.
~ Change the given indirect speech into direct.
She said “I've been on the web since 1999”.
| She said she had been on the web since 1999.+
| She said she is been on the web since 1999.
| She said she been on the web since 1999.
| She said she have on the web since 1999.
| She said she has been being on the web since 1999.
~ Change the given indirect speech into direct.
She said she could teach English online
| She said: “I can teach English online.”+
| She say: “I can teach English online”.
| She said: “I could teach English online”.
| She says: “She can teach English online”
| She said: “She is teach English online”.
~ Find the right variants of Conditional 2
| If she had a hamster, she would call him Fred.
| If we meet him tomorrow, we'll say hello.
| I will prepare breakfast if I wake up early.
| If it rains, the roads get slippery and dangerous.
| If I work hard, I’ll finish writing my new book on time.
~ Find the right variants of Conditional 3.
| If I had been more careful, I wouldn’t have made such a big mistake.
| I will prepare breakfast if I wake up early.
| If we meet him tomorrow, we'll say hello.
| If we work hard, we’ll finish the project on time.
| If it rains, the roads get slippery and dangerous.
~ Find the right variant of Conditional 3
| If I had won money, I would have bought a new car.
| If we meet him tomorrow, we'll say hello.
| I will prepare breakfast if I wake up early.
| If she has a hamster, she will call him Fred.
| If it rains, the roads get slippery and dangerous.
~ Find the right variant of Conditional 1.
| If it rains, the roads get slippery and dangerous.
| If I hadn't studied, I would pass the exam.
| We'd be stupid if we told him about our secret.
| If she had a hamster, she would call him Fred.
| If I did not lose my money, I would buy a dress.
~ Find the verb which is followed by infinitive and gerund.
| forget+
| hope
| learn
|mean
|manage
~ Find the sentence with the gerund
| I enjoy listening to music.+
| I called every morning to see if there was any news. | We stopped to have a smoke. | He came here to speak to me, not to you. | To explain the problem he drew diagrams all over the blackboard.
~ Find the missed word.
Have you finished ... your hair yet?
| washing+
| removing
| to cut
| to take
| to do
| to make
~ Find the grammatically right sentence.
| The car was waiting at the door to take them to the station.+ | The door was waiting at the car to take them to the station.
| The car was waiting at the door to take them to the station.
| The car was waiting at the to door to the station take them.
| The car was waiting them to the station at the door to take.
| The car was waiting at the to door to the station take them.