I've handled chopsticks skillfully for decades. While it used to amuse me, it mildly annoys me

I've handled chopsticks skillfully for decades. While it used to amuse me, it mildly annoys me now that Chinese react with astonishment to see a foreigner handle them — as if someone from a country that put a man on the moon would somehow be incapable of handling two simple sticks. As you can see, China's influence stretched far and wide long before opening-up in the late 1970s or today's Belt and Road Initiative. So the idea that most foreigners cannot use chopsticks is, simply put, fiddlesticks.
My first exposure to chopsticks came way back in the 1960s via the elementary piano tune known as Chopsticks, which aroused my curiosity as to what the word meant. Not long afterward, my parents introduced me to Chinese food at King Fong Cafe in Omaha, Nebraska, which, I only learned recently, was among the landmarks of the heartland city's once-thriving Chinatown in the early 1900s.
In fact, I have undergone special kuaizi training (improving skills, for example, by constantly picking up peanuts when I lived with my Chinese tai chi master) and experimentation (exploring the use of chopsticks to snap up popcorn and donuts；I'm working on ice cream).
But there's one western food for which chopsticks are truly a godsend： salads. After moving to China in 2014, I bought a salad at a convenience store, and the clerk handed me kuaizi. I refused at first, but then thought, “All right” and gave it a try.
Amazingly useful! I could pick and choose each small piece much more carefully, without having to move awkwardly trying to spear the crispy carrot or cherry tomato and then move it mouth ward.
Another clear advantage of these simplest of tools is that they regulate the pace and volume of eating. It's much harder to “pig out” by shoveling food with chopsticks than with a fork and spoon.
However, in the spirit of globalization, let's not overlook the finer points of knife and fork. In fact, a handy thing about the fork is that everyone can basically use it with each hand. I dare to say that, for Chinese and foreigners alike, switching hands while using chopsticks is not so readily done with confidence.
4．What makes the writer feel unhappy about using chopsticks?
A．People's finding it amusing.
B．Not being able to handle them easily.
C．Feeling as if he/she was on the moon.
D．Chinese strange look on seeing him/her using them.
5．What does the underlined word “fiddlesticks“ in Paragraph 1 mean?
A．A norm. B．A nonsense. C．A joke. D．A shame.
6．What can we learn from the writer's using chopsticks?
A．He/She first learnt to use them when listening to a piano tune.
B．He/She can use chopsticks to eat ice cream skillfully.
C．Chopsticks prove useful in eating any western food.
D．Using chopsticks limits one's intake of food.
7．What is the best title for the passage?