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【单选题】
Which of the following is closest in meaning to the underlined phrase 'zoning out' in PARAGRAPH FOUR? 查看材料A.
Losing concentration.
B.
Being alone.
C.
Buying things on line.
D.
Playing games.
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【单选题】Which statement about entering into a tank which has been sealed for a long time is TRUE ________．
A.
The tank should be tested only once to ensure the oxygen content is at least 14% before entry
B.
The tank must be tested at frequent intervals to ensure that hazardous gasses have not regenerated
C.
The tank need not be tested for oxygen content if it is ventilated for more than 24 hours
D.
If the oxygen content tests at less than 12% you should wear an approved gas mask
【多选题】Which statement is correct for the concept of the word?
A.
Every word is a unity of the form and the meaning.
B.
Word is a cluster of letters between two blanks.
C.
A word is the fundamental unit of sentence structure.
D.
As for its internal structure, a word is the most stable unit in a language.
【单选题】Which statement about buying things for yourself is true?
A.
You feel good for a long time.
B.
You feel good for a short time
【单选题】Which statement about sample collection for routine urinalysis is true?
A.
Preservative tablets should be used for collecting random urine specimens
B.
Containers may be washed and reused if rinsed in deionized H 2 0
C.
Samples may be stored at room temperature for up to 2 hours
D.
Random samples are acceptable when renal disease is suspected
【单选题】Which statement is not true for 2019-nCoV?
A.
It can spread through contact
B.
It can be killed by 75% alcohol
C.
The weakened immune system can be hardly infected
【单选题】Which statement is true for cellulose, but not true for protein?
A.
It is found in cell surface membranes.
B.
It is synthesised from identical sub-units
C.
It is used as an energy source.
D.
It may be a structural component.
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