Which of following statement about taste are correct? ( )
A. Mouth lacking saliva cannot cause taste.
B. Some proteinaceous substances can also produce sweetness.
C. Spicy is basic taste.
D. When sugar is added to a high concentration of lemonade, the sour taste and sweetness will cancel each other out and weaken each other.
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We must strengthen the socialist road self-confidence, theoretical self-confidence, and institutional self-confidence of the Chinese characteristics. In the final analysis, we must persist ( ).
A. Institutional confidence
B. Theoretical confidence
Cultural confidence
After wandering around the world for about 2000 years, nearly 100 generations, Jews have taught in which language and which language textbooks are used in primary, middle and university classes established after the country founding in 1948.( )
A. English and English
B. French and French
C. Russian and Russian
D. Hebrew and Hebrew
Today, sorghum, the main raw material for the production of Shanxi mature vinegar, is most likely to be introduced in a large area of China in which period?( )
A. Liao and Song Dynasties
B. Zhou Dynasty
C. Han Dynasty
D. Ming Dynasty
Where was the source of litchi eaten by Yang Guifei in the Tang Dynasty?( )
A. Guangdong
B. Sichuan
C. Fujian
D. Guangxi