What is NOT a key element of a balanced meal（）
A. Proteins.
B. Fats.
C. Vitamins.
D. Sugar.
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What do we learn from the use of the American national flag（）
A. There has been a lot of controversy over the use of flag.
B. The best athletes can wear uniforms with the design of the flag.
C. There are precise regulations and customs to be followed.
D. Americans can print the flag on their cushions or handkerchiefs.
How should the American national flag be displayed at an unveiling ceremony（）
A. It should be attached to the status.
B. It should be hung from the top of the monument.
C. It should be spread over the object to be unveiled.
D. It should be carried high up in the air.
The word "weekend" came into being in English in about（）
A. 1800s
B. 1850s
C. 1920s
D. 1930s
What does the man say about people who shop quickly（）
A. They may buy items of low quality.
B. They may buy items at higher prices.
C. They do not like shopping.
D. They are making specific purchases.
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