англ колок 6
.docxThe student will have two tests____ next week (-)
New carbon fiber may be used___( in aviation to reinforce aircraft fuselages)
He passed his exam in anatomy___ last week ( -)
Carbon dioxide is____( the main component of the Earth atmosphere)
All organic substances contain___( carbon)
The students described the___ reaction between iron and oxygen(chemical)
The patient had the symptoms of carbon monoxide___(poisoning)
Biochemistry studies chemical reactions in___ cells (living)
____ graphite, diamond is transparent and ultrahard ( Unlike)
A chemical reaction between ___ and other substances is called oxidation ( oxygen)
Carbon monoxide is ___( a gas without color and smell)
This substance is highly___ for human beings ( poisonous)
The students studied the ___ of proteins last week ( properties)
Carbon is chemically very active and forms ___ (more than a billion compounds)
____ is a substance that supplies body with energy ( Carbohydrate)
Don’t disturb me. I___ for my exam in chemistry ( am preparing)
Carbon occurs naturally___( both as a simple substance and in compounds)
Don’t worry. We___ the doctor (have already called)
The two solid forms of carbon( graphite and diamond) differ____( in their physical properties)
John___ yet where to go on summer vacation ( hasn’t decided)
Carbon, the sixth element in the Periodic Table, has___( ubiquitous properties)
I___ Ann at the university yesterday. She was preparing for her exam in anatomy (saw)
These people are speaking French. I__ them ( don’t understand)
We ___ practical classes in chemistry twice a week ( have)
The basic___ of the living cell are the membrane, the nucleus, the cytoplasm ( components)
This ___ is very interesting ( phenomenon)
Fruit __ a lot of vitamins ( contain)
DNA and RNA are___ acids ( nucleic)
Some carbon-based___ are solids in rocks ( compounds)
She __ to a fitness center twice a week ( goes)
I __ this drug every day (take)
He wants to become a research ___ (chemist)
It s half past nine. The lecture__ half an hour ago ( began)
I ___ such experiments before ( have never done)
It s half past nine. The lecture___ ( has already begun)
We bought these drugs at the nearest__ shop. ( chemist s)
Helen had a high temperature yesterday and___ the doctor ( called)
Sue___ classes last month, she was ill ( didn’t attend)
Carbon monoxide is formed when a fuel burns___( without enough oxygen available)
Where are the children? –They ___ football at the sports ground ( are playing)
Carbon monoxide is a___ gas without smell ( colorless)
We __ out experiments yet ( haven’t finished)
Let s go for a walk. It___ not ( isn’t raining)
Normally oxygen passes through the lungs and enters___ the bloodstream (in)
The symptoms of carbon monoxide poisoning are___ ( headache, fatigue and nausea)
Look at speedometer! You___ too fast ( are driving)
Can you hear the music? Jane ___ the piano ( is playing)
Most carbon-based compounds are___ ( components of living cells)
We are preparing ___ our English test ( to)
Have you passed all the exams? –Yes, I ___ the last exam yesterday ( passed)