The underlined word 'volatility' in Paragraph 2 refers to______.
A．stability
B．fluctuation
C．surging
D．filling

未分类题Currently, most job opportunities for high school students and graduates are available in______.A．the high-tech sectorB．temporary employmentC．retail storesD．amusement parks

未分类题According to the text, most great thinkers and artists______.A．were productive even in their later yearsB．were most successful before the age of 30C．made contributions regardless of ageD．contributed the most before old age

未分类题如果一幅图像能够表示的颜色数量为256种，则该图像的量化位数是()位。A. 4B.1C.256D. 8

未分类题The phrase 'put Estonia on the map'(line 5, para. 4)most likely means______.A．gain international fame for the Estonian governmentB．confirm Estonia's post-Soviet independenceC．garner respect for genetics research conducted in EstoniaD．bring global recognition to this little-known country

未分类题What does the quoted content of the last paragraph means?A．The algorithm of computers guided some fund companies' investment.B．Machines cannot tell the hidden meaning of people's words.C．The slang about dentist confuses computers.D．People are good at analyzing the meaning and mood of a text.